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/*
* Copyright 2001, 2002, 2003 David Mansfield and Cobite, Inc.
* See COPYING file for license information
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <unistd.h>
#include <search.h>
#include <time.h>
#include <ctype.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <regex.h>
#include <sys/wait.h> /* for WEXITSTATUS - see system(3) */
#include <cbtcommon/hash.h>
#include <cbtcommon/list.h>
#include <cbtcommon/text_util.h>
#include <cbtcommon/debug.h>
#include <cbtcommon/rcsid.h>
#include "cache.h"
#include "cvsps_types.h"
#include "cvsps.h"
#include "util.h"
#include "stats.h"
#include "cap.h"
#include "cvs_direct.h"
#include "list_sort.h"
RCSID("$Id: cvsps.c,v 4.106 2005/05/26 03:39:29 david Exp $");
#define CVS_LOG_BOUNDARY "----------------------------\n"
#define CVS_FILE_BOUNDARY "=============================================================================\n"
enum
{
NEED_FILE,
NEED_SYMS,
NEED_EOS,
NEED_START_LOG,
NEED_REVISION,
NEED_DATE_AUTHOR_STATE,
NEED_EOM
};
/* true globals */
struct hash_table * file_hash;
CvsServerCtx * cvs_direct_ctx;
char root_path[PATH_MAX];
char repository_path[PATH_MAX];
const char * tag_flag_descr[] = {
"",
"**FUNKY**",
"**INVALID**",
"**INVALID**"
};
const char * fnk_descr[] = {
"",
"FNK_SHOW_SOME",
"FNK_SHOW_ALL",
"FNK_HIDE_ALL",
"FNK_HIDE_SOME"
};
/* static globals */
static int ps_counter;
static void * ps_tree;
static struct hash_table * global_symbols;
static char strip_path[PATH_MAX];
static int strip_path_len;
static time_t cache_date;
static int update_cache;
static int ignore_cache;
static int do_write_cache;
static int statistics;
static const char * test_log_file;
static struct hash_table * branch_heads;
static struct list_head all_patch_sets;
static struct list_head collisions;
/* settable via options */
static int timestamp_fuzz_factor = 300;
static int do_diff;
static const char * restrict_author;
static int have_restrict_log;
static regex_t restrict_log;
static int have_restrict_file;
static regex_t restrict_file;
static time_t restrict_date_start;
static time_t restrict_date_end;
static const char * restrict_branch;
static struct list_head show_patch_set_ranges;
static int summary_first;
static const char * norc = "";
static const char * patch_set_dir;
static const char * restrict_tag_start;
static const char * restrict_tag_end;
static int restrict_tag_ps_start;
static int restrict_tag_ps_end = INT_MAX;
static const char * diff_opts;
static int bkcvs;
static int no_rlog;
static int cvs_direct;
static int compress;
static char compress_arg[8];
static int track_branch_ancestry;
static void check_norc(int, char *[]);
static int parse_args(int, char *[]);
static int parse_rc();
static void load_from_cvs();
static void init_paths();
static CvsFile * parse_file(const char *);
static CvsFileRevision * parse_revision(CvsFile * file, char * rev_str);
static void assign_pre_revision(PatchSetMember *, CvsFileRevision * rev);
static void check_print_patch_set(PatchSet *);
static void print_patch_set(PatchSet *);
static void assign_patchset_id(PatchSet *);
static int compare_rev_strings(const char *, const char *);
static int compare_patch_sets_by_members(const PatchSet * ps1, const PatchSet * ps2);
static int compare_patch_sets_bk(const void *, const void *);
static int compare_patch_sets(const void *, const void *);
static int compare_patch_sets_bytime_list(struct list_head *, struct list_head *);
static int compare_patch_sets_bytime(const PatchSet *, const PatchSet *);
static int is_revision_metadata(const char *);
static int patch_set_member_regex(PatchSet * ps, regex_t * reg);
static int patch_set_affects_branch(PatchSet *, const char *);
static void do_cvs_diff(PatchSet *);
static PatchSet * create_patch_set();
static PatchSetRange * create_patch_set_range();
static void parse_sym(CvsFile *, char *);
static void resolve_global_symbols();
static int revision_affects_branch(CvsFileRevision *, const char *);
static int is_vendor_branch(const char *);
static void set_psm_initial(PatchSetMember * psm);
static int check_rev_funk(PatchSet *, CvsFileRevision *);
static CvsFileRevision * rev_follow_branch(CvsFileRevision *, const char *);
static int before_tag(CvsFileRevision * rev, const char * tag);
static void determine_branch_ancestor(PatchSet * ps, PatchSet * head_ps);
static void handle_collisions();
int main(int argc, char *argv[])
{
debuglvl = DEBUG_APPERROR|DEBUG_SYSERROR|DEBUG_APPMSG1;
INIT_LIST_HEAD(&show_patch_set_ranges);
/*
* we want to parse the rc first, so command line can override it
* but also, --norc should stop the rc from being processed, so
* we look for --norc explicitly first. Note: --norc in the rc
* file itself will prevent the cvs rc file from being used.
*/
check_norc(argc, argv);
if (strlen(norc) == 0 && parse_rc() < 0)
exit(1);
if (parse_args(argc, argv) < 0)
exit(1);
if (diff_opts && !cvs_direct && do_diff)
{
debug(DEBUG_APPMSG1, "\nWARNING: diff options are not supported by 'cvs rdiff'");
debug(DEBUG_APPMSG1, " which is usually used to create diffs. 'cvs diff'");
debug(DEBUG_APPMSG1, " will be used instead, but the resulting patches ");
debug(DEBUG_APPMSG1, " will need to be applied using the '-p0' option");
debug(DEBUG_APPMSG1, " to patch(1) (in the working directory), ");
debug(DEBUG_APPMSG1, " instead of '-p1'\n");
}
file_hash = create_hash_table(1023);
global_symbols = create_hash_table(111);
branch_heads = create_hash_table(1023);
INIT_LIST_HEAD(&all_patch_sets);
INIT_LIST_HEAD(&collisions);
/* this parses some of the CVS/ files, and initializes
* the repository_path and other variables
*/
init_paths();
if (!ignore_cache)
{
int save_fuzz_factor = timestamp_fuzz_factor;
/* the timestamp fuzz should only be in effect when loading from
* CVS, not re-fuzzed when loading from cache. This is a hack
* working around bad use of global variables
*/
timestamp_fuzz_factor = 0;
if ((cache_date = read_cache()) < 0)
update_cache = 1;
timestamp_fuzz_factor = save_fuzz_factor;
}
if (cvs_direct && (do_diff || (update_cache && !test_log_file)))
cvs_direct_ctx = open_cvs_server(root_path, compress);
if (update_cache)
{
load_from_cvs();
do_write_cache = 1;
}
//XXX
//handle_collisions();
list_sort(&all_patch_sets, compare_patch_sets_bytime_list);
ps_counter = 0;
walk_all_patch_sets(assign_patchset_id);
handle_collisions();
resolve_global_symbols();
if (do_write_cache)
write_cache(cache_date);
if (statistics)
print_statistics(ps_tree);
/* check that the '-r' symbols (if specified) were resolved */
if (restrict_tag_start && restrict_tag_ps_start == 0 &&
strcmp(restrict_tag_start, "#CVSPS_EPOCH") != 0)
{
debug(DEBUG_APPERROR, "symbol given with -r: %s: not found", restrict_tag_start);
exit(1);
}
if (restrict_tag_end && restrict_tag_ps_end == INT_MAX)
{
debug(DEBUG_APPERROR, "symbol given with second -r: %s: not found", restrict_tag_end);
exit(1);
}
walk_all_patch_sets(check_print_patch_set);
if (summary_first++)
walk_all_patch_sets(check_print_patch_set);
if (cvs_direct_ctx)
close_cvs_server(cvs_direct_ctx);
exit(0);
}
static void load_from_cvs()
{
FILE * cvsfp;
char buff[BUFSIZ];
int state = NEED_FILE;
CvsFile * file = NULL;
PatchSetMember * psm = NULL;
char datebuff[20];
char authbuff[AUTH_STR_MAX];
char logbuff[LOG_STR_MAX + 1];
int loglen = 0;
int have_log = 0;
char cmd[BUFSIZ];
char date_str[64];
char use_rep_buff[PATH_MAX];
char * ltype;
if (!no_rlog && !test_log_file && cvs_check_cap(CAP_HAVE_RLOG))
{
ltype = "rlog";
snprintf(use_rep_buff, PATH_MAX, "%s", repository_path);
}
else
{
ltype = "log";
use_rep_buff[0] = 0;
}
if (cache_date > 0)
{
struct tm * tm = gmtime(&cache_date);
strftime(date_str, 64, "%d %b %Y %H:%M:%S %z", tm);
/* this command asks for logs using two different date
* arguments, separated by ';' (see man rlog). The first
* gets all revisions more recent than date, the second
* gets a single revision no later than date, which combined
* get us all revisions that have occurred since last update
* and overlaps what we had before by exactly one revision,
* which is necessary to fill in the pre_rev stuff for a
* PatchSetMember
*/
snprintf(cmd, BUFSIZ, "cvs %s %s %s -d '%s<;%s' %s", compress_arg, norc, ltype, date_str, date_str, use_rep_buff);
}
else
{
date_str[0] = 0;
snprintf(cmd, BUFSIZ, "cvs %s %s %s %s", compress_arg, norc, ltype, use_rep_buff);
}
debug(DEBUG_STATUS, "******* USING CMD %s", cmd);
cache_date = time(NULL);
/* FIXME: this is ugly, need to virtualize the accesses away from here */
if (test_log_file)
cvsfp = fopen(test_log_file, "r");
else if (cvs_direct_ctx)
cvsfp = cvs_rlog_open(cvs_direct_ctx, repository_path, date_str);
else
cvsfp = popen(cmd, "r");
if (!cvsfp)
{
debug(DEBUG_SYSERROR, "can't open cvs pipe using command %s", cmd);
exit(1);
}
for (;;)
{
char * tst;
if (cvs_direct_ctx)
tst = cvs_rlog_fgets(buff, BUFSIZ, cvs_direct_ctx);
else
tst = fgets(buff, BUFSIZ, cvsfp);
if (!tst)
break;
debug(DEBUG_STATUS, "state: %d read line:%s", state, buff);
switch(state)
{
case NEED_FILE:
if (strncmp(buff, "RCS file", 8) == 0 && (file = parse_file(buff)))
state = NEED_SYMS;
break;
case NEED_SYMS:
if (strncmp(buff, "symbolic names:", 15) == 0)
state = NEED_EOS;
break;
case NEED_EOS:
if (!isspace(buff[0]))
{
/* see cvsps_types.h for commentary on have_branches */
file->have_branches = 1;
state = NEED_START_LOG;
}
else
parse_sym(file, buff);
break;
case NEED_START_LOG:
if (strcmp(buff, CVS_LOG_BOUNDARY) == 0)
state = NEED_REVISION;
break;
case NEED_REVISION:
if (strncmp(buff, "revision", 8) == 0)
{
char new_rev[REV_STR_MAX];
CvsFileRevision * rev;
strcpy(new_rev, buff + 9);
chop(new_rev);
/*
* rev may already exist (think cvsps -u), in which
* case parse_revision is a hash lookup
*/
rev = parse_revision(file, new_rev);
/*
* in the simple case, we are copying rev to psm->pre_rev
* (psm refers to last patch set processed at this point)
* since generally speaking the log is reverse chronological.
* This breaks down slightly when branches are introduced
*/
assign_pre_revision(psm, rev);
/*
* if this is a new revision, it will have no post_psm associated.
* otherwise we are (probably?) hitting the overlap in cvsps -u
*/
if (!rev->post_psm)
{
psm = rev->post_psm = create_patch_set_member();
psm->post_rev = rev;
psm->file = file;
state = NEED_DATE_AUTHOR_STATE;
}
else
{
/* we hit this in cvsps -u mode, we are now up-to-date
* w.r.t this particular file. skip all of the rest
* of the info (revs and logs) until we hit the next file
*/
psm = NULL;
state = NEED_EOM;
}
}
break;
case NEED_DATE_AUTHOR_STATE:
if (strncmp(buff, "date:", 5) == 0)
{
char * p;
strncpy(datebuff, buff + 6, 19);
datebuff[19] = 0;
strcpy(authbuff, "unknown");
p = strstr(buff, "author: ");
if (p)
{
char * op;
p += 8;
op = strchr(p, ';');
if (op)
{
strzncpy(authbuff, p, op - p + 1);
}
}
/* read the 'state' tag to see if this is a dead revision */
p = strstr(buff, "state: ");
if (p)
{
char * op;
p += 7;
op = strchr(p, ';');
if (op)
if (strncmp(p, "dead", MIN(4, op - p)) == 0)
psm->post_rev->dead = 1;
}
state = NEED_EOM;
}
break;
case NEED_EOM:
if (strcmp(buff, CVS_LOG_BOUNDARY) == 0)
{
if (psm)
{
PatchSet * ps = get_patch_set(datebuff, logbuff, authbuff, psm->post_rev->branch, psm);
patch_set_add_member(ps, psm);
}
logbuff[0] = 0;
loglen = 0;
have_log = 0;
state = NEED_REVISION;
}
else if (strcmp(buff, CVS_FILE_BOUNDARY) == 0)
{
if (psm)
{
PatchSet * ps = get_patch_set(datebuff, logbuff, authbuff, psm->post_rev->branch, psm);
patch_set_add_member(ps, psm);
assign_pre_revision(psm, NULL);
}
logbuff[0] = 0;
loglen = 0;
have_log = 0;
psm = NULL;
file = NULL;
state = NEED_FILE;
}
else
{
/* other "blahblah: information;" messages can
* follow the stuff we pay attention to
*/
if (have_log || !is_revision_metadata(buff))
{
/* if the log buffer is full, that's it.
*
* Also, read lines (fgets) always have \n in them
* which we count on. So if truncation happens,
* be careful to put a \n on.
*
* Buffer has LOG_STR_MAX + 1 for room for \0 if
* necessary
*/
if (loglen < LOG_STR_MAX)
{
int len = strlen(buff);
if (len >= LOG_STR_MAX - loglen)
{
debug(DEBUG_APPMSG1, "WARNING: maximum log length exceeded, truncating log");
len = LOG_STR_MAX - loglen;
buff[len - 1] = '\n';
}
debug(DEBUG_STATUS, "appending %s to log", buff);
memcpy(logbuff + loglen, buff, len);
loglen += len;
logbuff[loglen] = 0;
have_log = 1;
}
}
else
{
debug(DEBUG_STATUS, "ignoring unhandled info %s", buff);
}
}
break;
}
}
if (state == NEED_SYMS)
{
debug(DEBUG_APPERROR, "Error: 'symbolic names' not found in log output.");
debug(DEBUG_APPERROR, " Perhaps you should try running with --norc");
exit(1);
}
if (state != NEED_FILE)
{
debug(DEBUG_APPERROR, "Error: Log file parsing error. (%d) Use -v to debug", state);
exit(1);
}
if (test_log_file)
{
fclose(cvsfp);
}
else if (cvs_direct_ctx)
{
cvs_rlog_close(cvs_direct_ctx);
}
else
{
if (pclose(cvsfp) < 0)
{
debug(DEBUG_APPERROR, "cvs rlog command exited with error. aborting");
exit(1);
}
}
}
static int usage(const char * str1, const char * str2)
{
if (str1)
debug(DEBUG_APPERROR, "\nbad usage: %s %s\n", str1, str2);
debug(DEBUG_APPERROR, "Usage: cvsps [-h] [-x] [-u] [-z <fuzz>] [-g] [-s <range>[,<range>]] ");
debug(DEBUG_APPERROR, " [-a <author>] [-f <file>] [-d <date1> [-d <date2>]] ");
debug(DEBUG_APPERROR, " [-b <branch>] [-l <regex>] [-r <tag> [-r <tag>]] ");
debug(DEBUG_APPERROR, " [-p <directory>] [-v] [-t] [--norc] [--summary-first]");
debug(DEBUG_APPERROR, " [--test-log <captured cvs log file>] [--bkcvs]");
debug(DEBUG_APPERROR, " [--no-rlog] [--diff-opts <option string>] [--cvs-direct]");
debug(DEBUG_APPERROR, " [--debuglvl <bitmask>] [-Z <compression>] [--root <cvsroot>]");
debug(DEBUG_APPERROR, " [-q] [-A] [<repository>]");
debug(DEBUG_APPERROR, "");
debug(DEBUG_APPERROR, "Where:");
debug(DEBUG_APPERROR, " -h display this informative message");
debug(DEBUG_APPERROR, " -x ignore (and rebuild) cvsps.cache file");
debug(DEBUG_APPERROR, " -u update cvsps.cache file");
debug(DEBUG_APPERROR, " -z <fuzz> set the timestamp fuzz factor for identifying patch sets");
debug(DEBUG_APPERROR, " -g generate diffs of the selected patch sets");
debug(DEBUG_APPERROR, " -s <patch set>[-[<patch set>]][,<patch set>...] restrict patch sets by id");
debug(DEBUG_APPERROR, " -a <author> restrict output to patch sets created by author");
debug(DEBUG_APPERROR, " -f <file> restrict output to patch sets involving file");
debug(DEBUG_APPERROR, " -d <date1> -d <date2> if just one date specified, show");
debug(DEBUG_APPERROR, " revisions newer than date1. If two dates specified,");
debug(DEBUG_APPERROR, " show revisions between two dates.");
debug(DEBUG_APPERROR, " -b <branch> restrict output to patch sets affecting history of branch");
debug(DEBUG_APPERROR, " -l <regex> restrict output to patch sets matching <regex> in log message");
debug(DEBUG_APPERROR, " -r <tag1> -r <tag2> if just one tag specified, show");
debug(DEBUG_APPERROR, " revisions since tag1. If two tags specified, show");
debug(DEBUG_APPERROR, " revisions between the two tags.");
debug(DEBUG_APPERROR, " -p <directory> output patch sets to individual files in <directory>");
debug(DEBUG_APPERROR, " -v show very verbose parsing messages");
debug(DEBUG_APPERROR, " -t show some brief memory usage statistics");
debug(DEBUG_APPERROR, " --norc when invoking cvs, ignore the .cvsrc file");
debug(DEBUG_APPERROR, " --summary-first when multiple patch sets are shown, put all summaries first");
debug(DEBUG_APPERROR, " --test-log <captured cvs log> supply a captured cvs log for testing");
debug(DEBUG_APPERROR, " --diff-opts <option string> supply special set of options to diff");
debug(DEBUG_APPERROR, " --bkcvs special hack for parsing the BK -> CVS log format");
debug(DEBUG_APPERROR, " --no-rlog disable rlog (it's faulty in some setups)");
debug(DEBUG_APPERROR, " --cvs-direct (--no-cvs-direct) enable (disable) built-in cvs client code");
debug(DEBUG_APPERROR, " --debuglvl <bitmask> enable various debug channels.");
debug(DEBUG_APPERROR, " -Z <compression> A value 1-9 which specifies amount of compression");
debug(DEBUG_APPERROR, " --root <cvsroot> specify cvsroot. overrides env. and working directory (cvs-direct only)");
debug(DEBUG_APPERROR, " -q be quiet about warnings");
debug(DEBUG_APPERROR, " -A track and report branch ancestry");
debug(DEBUG_APPERROR, " <repository> apply cvsps to repository. overrides working directory");
debug(DEBUG_APPERROR, "\ncvsps version %s\n", VERSION);
return -1;
}
static int parse_args(int argc, char *argv[])
{
int i = 1;
while (i < argc)
{
if (strcmp(argv[i], "-z") == 0)
{
if (++i >= argc)
return usage("argument to -z missing", "");
timestamp_fuzz_factor = atoi(argv[i++]);
continue;
}
if (strcmp(argv[i], "-g") == 0)
{
do_diff = 1;
i++;
continue;
}
if (strcmp(argv[i], "-s") == 0)
{
PatchSetRange * range;
char * min_str, * max_str;
if (++i >= argc)
return usage("argument to -s missing", "");
min_str = strtok(argv[i++], ",");
do
{
range = create_patch_set_range();
max_str = strrchr(min_str, '-');
if (max_str)
*max_str++ = '\0';
else
max_str = min_str;
range->min_counter = atoi(min_str);
if (*max_str)
range->max_counter = atoi(max_str);
else
range->max_counter = INT_MAX;
list_add(&range->link, show_patch_set_ranges.prev);
}
while ((min_str = strtok(NULL, ",")));
continue;
}
if (strcmp(argv[i], "-a") == 0)
{
if (++i >= argc)
return usage("argument to -a missing", "");
restrict_author = argv[i++];
continue;
}
if (strcmp(argv[i], "-l") == 0)
{
int err;
if (++i >= argc)
return usage("argument to -l missing", "");
if ((err = regcomp(&restrict_log, argv[i++], REG_EXTENDED|REG_NOSUB)) != 0)
{
char errbuf[256];
regerror(err, &restrict_log, errbuf, 256);
return usage("bad regex to -l", errbuf);
}
have_restrict_log = 1;
continue;
}
if (strcmp(argv[i], "-f") == 0)
{
int err;
if (++i >= argc)
return usage("argument to -f missing", "");
if ((err = regcomp(&restrict_file, argv[i++], REG_EXTENDED|REG_NOSUB)) != 0)
{
char errbuf[256];
regerror(err, &restrict_file, errbuf, 256);
return usage("bad regex to -f", errbuf);
}
have_restrict_file = 1;
continue;
}
if (strcmp(argv[i], "-d") == 0)
{
time_t *pt;
if (++i >= argc)
return usage("argument to -d missing", "");
pt = (restrict_date_start == 0) ? &restrict_date_start : &restrict_date_end;
convert_date(pt, argv[i++]);
continue;
}
if (strcmp(argv[i], "-r") == 0)
{
if (++i >= argc)
return usage("argument to -r missing", "");
if (restrict_tag_start)
restrict_tag_end = argv[i];
else
restrict_tag_start = argv[i];
i++;
continue;
}
if (strcmp(argv[i], "-u") == 0)
{
update_cache = 1;
i++;
continue;
}
if (strcmp(argv[i], "-x") == 0)
{
ignore_cache = 1;
update_cache = 1;
i++;
continue;
}
if (strcmp(argv[i], "-b") == 0)
{
if (++i >= argc)
return usage("argument to -b missing", "");
restrict_branch = argv[i++];
/* Warn if the user tries to use TRUNK. Should eventually
* go away as TRUNK may be a valid branch within CVS
*/
if (strcmp(restrict_branch, "TRUNK") == 0)
debug(DEBUG_APPMSG1, "WARNING: The HEAD branch of CVS is called HEAD, not TRUNK");
continue;
}
if (strcmp(argv[i], "-p") == 0)
{
if (++i >= argc)
return usage("argument to -p missing", "");
patch_set_dir = argv[i++];
continue;
}
if (strcmp(argv[i], "-v") == 0)
{
debuglvl = ~0;
i++;
continue;
}
if (strcmp(argv[i], "-t") == 0)
{
statistics = 1;
i++;
continue;
}
if (strcmp(argv[i], "--summary-first") == 0)
{
summary_first = 1;
i++;
continue;
}
if (strcmp(argv[i], "-h") == 0)
return usage(NULL, NULL);
/* see special handling of --norc in main */
if (strcmp(argv[i], "--norc") == 0)
{
norc = "-f";
i++;
continue;
}
if (strcmp(argv[i], "--test-log") == 0)
{
if (++i >= argc)
return usage("argument to --test-log missing", "");
test_log_file = argv[i++];
continue;
}
if (strcmp(argv[i], "--diff-opts") == 0)
{
if (++i >= argc)
return usage("argument to --diff-opts missing", "");
/* allow diff_opts to be turned off by making empty string
* into NULL
*/
if (!strlen(argv[i]))
diff_opts = NULL;
else
diff_opts = argv[i];
i++;
continue;
}
if (strcmp(argv[i], "--bkcvs") == 0)
{
bkcvs = 1;
i++;
continue;
}
if (strcmp(argv[i], "--no-rlog") == 0)
{
no_rlog = 1;
i++;
continue;
}
if (strcmp(argv[i], "--cvs-direct") == 0)
{
cvs_direct = 1;
i++;
continue;
}
if (strcmp(argv[i], "--no-cvs-direct") == 0)
{
cvs_direct = 0;
i++;
continue;
}
if (strcmp(argv[i], "--debuglvl") == 0)
{
if (++i >= argc)
return usage("argument to --debuglvl missing", "");
debuglvl = atoi(argv[i++]);
continue;
}
if (strcmp(argv[i], "-Z") == 0)
{
if (++i >= argc)
return usage("argument to -Z", "");
compress = atoi(argv[i++]);
if (compress < 0 || compress > 9)
return usage("-Z level must be between 1 and 9 inclusive (0 disables compression)", argv[i-1]);
if (compress == 0)
compress_arg[0] = 0;
else
snprintf(compress_arg, 8, "-z%d", compress);
continue;
}
if (strcmp(argv[i], "--root") == 0)
{
if (++i >= argc)
return usage("argument to --root missing", "");
strcpy(root_path, argv[i++]);
continue;
}
if (strcmp(argv[i], "-q") == 0)
{
debuglvl &= ~DEBUG_APPMSG1;
i++;
continue;
}
if (strcmp(argv[i], "-A") == 0)
{
track_branch_ancestry = 1;
i++;
continue;
}
if (argv[i][0] == '-')
return usage("invalid argument", argv[i]);
strcpy(repository_path, argv[i++]);
}
return 0;
}
static int parse_rc()
{
char rcfile[PATH_MAX];
FILE * fp;
snprintf(rcfile, PATH_MAX, "%s/cvspsrc", get_cvsps_dir());
if ((fp = fopen(rcfile, "r")))
{
char buff[BUFSIZ];
while (fgets(buff, BUFSIZ, fp))
{
char * argv[3], *p;
int argc = 2;
chop(buff);
argv[0] = "garbage";
p = strchr(buff, ' ');
if (p)
{
*p++ = '\0';
argv[2] = xstrdup(p);
argc = 3;
}
argv[1] = xstrdup(buff);
if (parse_args(argc, argv) < 0)
return -1;
}
fclose(fp);
}
return 0;
}
static void init_paths()
{
FILE * fp;
char * p;
int len;
/* determine the CVSROOT. precedence:
* 1) command line
* 2) working directory (if present)
* 3) environment variable CVSROOT
*/
if (!root_path[0])
{
if (!(fp = fopen("CVS/Root", "r")))
{
const char * e;
debug(DEBUG_STATUS, "Can't open CVS/Root");
e = getenv("CVSROOT");
if (!e)
{
debug(DEBUG_APPERROR, "cannot determine CVSROOT");
exit(1);
}
strcpy(root_path, e);
}
else
{
if (!fgets(root_path, PATH_MAX, fp))
{
debug(DEBUG_APPERROR, "Error reading CVSROOT");
exit(1);
}
fclose(fp);
/* chop the lf and optional trailing '/' */
len = strlen(root_path) - 1;
root_path[len] = 0;
if (root_path[len - 1] == '/')
root_path[--len] = 0;
}
}
/* Determine the repository path, precedence:
* 1) command line
* 2) working directory
*/
if (!repository_path[0])
{
if (!(fp = fopen("CVS/Repository", "r")))
{
debug(DEBUG_SYSERROR, "Can't open CVS/Repository");
exit(1);
}
if (!fgets(repository_path, PATH_MAX, fp))
{
debug(DEBUG_APPERROR, "Error reading repository path");
exit(1);
}
chop(repository_path);
fclose(fp);
}
/* get the path portion of the root */
p = strrchr(root_path, ':');
if (!p)
p = root_path;
else
p++;
/* some CVS have the CVSROOT string as part of the repository
* string (initial substring). remove it.
*/
len = strlen(p);
if (strncmp(p, repository_path, len) == 0)
{
int rlen = strlen(repository_path + len + 1);
memmove(repository_path, repository_path + len + 1, rlen + 1);
}
/* the 'strip_path' will be used whenever the CVS server gives us a
* path to an 'rcs file'. the strip_path portion of these paths is
* stripped off, leaving us with the working file.
*
* NOTE: because of some bizarre 'feature' in cvs, when 'rlog' is used
* (instead of log) it gives the 'real' RCS file path, which can be different
* from the 'nominal' repository path because of symlinks in the server and
* the like. See also the 'parse_file' routine
*/
strip_path_len = snprintf(strip_path, PATH_MAX, "%s/%s/", p, repository_path);
if (strip_path_len < 0 || strip_path_len >= PATH_MAX)
{
debug(DEBUG_APPERROR, "strip_path overflow");
exit(1);
}
debug(DEBUG_STATUS, "strip_path: %s", strip_path);
}
static CvsFile * parse_file(const char * buff)
{
CvsFile * retval;
char fn[PATH_MAX];
int len = strlen(buff + 10);
char * p;
/* once a single file has been parsed ok we set this */
static int path_ok;
/* chop the ",v" string and the "LF" */
len -= 3;
memcpy(fn, buff + 10, len);
fn[len] = 0;
if (strncmp(fn, strip_path, strip_path_len) != 0)
{
/* if the very first file fails the strip path,
* then maybe we need to try for an alternate.
* this will happen if symlinks are being used
* on the server. our best guess is to look
* for the final occurance of the repository
* path in the filename and use that. it should work
* except in the case where:
* 1) the project has no files in the top-level directory
* 2) the project has a directory with the same name as the project
* 3) that directory sorts alphabetically before any other directory
* in which case, you are scr**ed
*/
if (!path_ok)
{
char * p = fn, *lastp = NULL;
while ((p = strstr(p, repository_path)))
lastp = p++;
if (lastp)
{
int len = strlen(repository_path);
memcpy(strip_path, fn, lastp - fn + len + 1);
strip_path_len = lastp - fn + len + 1;
strip_path[strip_path_len] = 0;
debug(DEBUG_APPMSG1, "NOTICE: used alternate strip path %s", strip_path);
goto ok;
}
}
/* FIXME: a subdirectory may have a different Repository path
* than it's parent. we'll fail the above test since strip_path
* is global for the entire checked out tree (recursively).
*
* For now just ignore such files
*/
debug(DEBUG_APPMSG1, "WARNING: file %s doesn't match strip_path %s. ignoring",
fn, strip_path);
return NULL;
}
ok:
path_ok = 1;
/* remove from beginning the 'strip_path' string */
len -= strip_path_len;
memmove(fn, fn + strip_path_len, len);
fn[len] = 0;
/* check if file is in the 'Attic/' and remove it */
if ((p = strrchr(fn, '/')) &&
p - fn >= 5 && strncmp(p - 5, "Attic", 5) == 0)
{
memmove(p - 5, p + 1, len - (p - fn + 1));
len -= 6;
fn[len] = 0;
}
debug(DEBUG_STATUS, "stripped filename %s", fn);
retval = (CvsFile*)get_hash_object(file_hash, fn);
if (!retval)
{
if ((retval = create_cvsfile()))
{
retval->filename = xstrdup(fn);
put_hash_object_ex(file_hash, retval->filename, retval, HT_NO_KEYCOPY, NULL, NULL);
}
else
{
debug(DEBUG_SYSERROR, "malloc failed");
exit(1);
}
debug(DEBUG_STATUS, "new file: %s", retval->filename);
}
else
{
debug(DEBUG_STATUS, "existing file: %s", retval->filename);
}
return retval;
}
PatchSet * get_patch_set(const char * dte, const char * log, const char * author, const char * branch, PatchSetMember * psm)
{
PatchSet * retval = NULL, **find = NULL;
int (*cmp1)(const void *,const void*) = (bkcvs) ? compare_patch_sets_bk : compare_patch_sets;
if (!(retval = create_patch_set()))
{
debug(DEBUG_SYSERROR, "malloc failed for PatchSet");
return NULL;
}
convert_date(&retval->date, dte);
retval->author = get_string(author);
retval->descr = xstrdup(log);
retval->branch = get_string(branch);
/* we are looking for a patchset suitable for holding this member.
* this means two things:
* 1) a patchset already containing an entry for the file is no good
* 2) for two patchsets with same exact date/time, if they reference
* the same file, we can properly order them. this primarily solves
* the 'cvs import' problem and may not have general usefulness
* because it would only work if the first member we consider is
* present in the existing ps.
*/
if (psm)
list_add(&psm->link, retval->members.prev);
find = (PatchSet**)tsearch(retval, &ps_tree, cmp1);
if (psm)
list_del(&psm->link);
if (*find != retval)
{
debug(DEBUG_STATUS, "found existing patch set");
if (bkcvs && strstr(retval->descr, "BKrev:"))
{
free((*find)->descr);
(*find)->descr = retval->descr;
}
else
{
free(retval->descr);
}
/* keep the minimum date of any member as the 'actual' date */
if (retval->date < (*find)->date)
(*find)->date = retval->date;
/* expand the min_date/max_date window to help finding other members .
* open the window by an extra margin determined by the fuzz factor
*/
if (retval->date - timestamp_fuzz_factor < (*find)->min_date)
{
(*find)->min_date = retval->date - timestamp_fuzz_factor;
//debug(DEBUG_APPMSG1, "WARNING: non-increasing dates in encountered patchset members");
}
else if (retval->date + timestamp_fuzz_factor > (*find)->max_date)
(*find)->max_date = retval->date + timestamp_fuzz_factor;
free(retval);
retval = *find;
}
else
{
debug(DEBUG_STATUS, "new patch set!");
debug(DEBUG_STATUS, "%s %s %s", retval->author, retval->descr, dte);
retval->min_date = retval->date - timestamp_fuzz_factor;
retval->max_date = retval->date + timestamp_fuzz_factor;
list_add(&retval->all_link, &all_patch_sets);
}
return retval;
}
static int get_branch_ext(char * buff, const char * rev, int * leaf)
{
char * p;
int len = strlen(rev);
/* allow get_branch(buff, buff) without destroying contents */
memmove(buff, rev, len);
buff[len] = 0;
p = strrchr(buff, '.');
if (!p)
return 0;
*p++ = 0;
if (leaf)
*leaf = atoi(p);
return 1;
}
static int get_branch(char * buff, const char * rev)
{
return get_branch_ext(buff, rev, NULL);
}
/*
* the goal if this function is to determine what revision to assign to
* the psm->pre_rev field. usually, the log file is strictly
* reverse chronological, so rev is direct ancestor to psm,
*
* This all breaks down at branch points however
*/
static void assign_pre_revision(PatchSetMember * psm, CvsFileRevision * rev)
{
char pre[REV_STR_MAX], post[REV_STR_MAX];
if (!psm)
return;
if (!rev)
{
/* if psm was last rev. for file, it's either an
* INITIAL, or first rev of a branch. to test if it's
* the first rev of a branch, do get_branch twice -
* this should be the bp.
*/
if (get_branch(post, psm->post_rev->rev) &&
get_branch(pre, post))
{
psm->pre_rev = file_get_revision(psm->file, pre);
list_add(&psm->post_rev->link, &psm->pre_rev->branch_children);
}
else
{
set_psm_initial(psm);
}
return;
}
/*
* is this canditate for 'pre' on the same branch as our 'post'?
* this is the normal case
*/
if (!get_branch(pre, rev->rev))
{
debug(DEBUG_APPERROR, "get_branch malformed input (1)");
return;
}
if (!get_branch(post, psm->post_rev->rev))
{
debug(DEBUG_APPERROR, "get_branch malformed input (2)");
return;
}
if (strcmp(pre, post) == 0)
{
psm->pre_rev = rev;
rev->pre_psm = psm;
return;
}
/* branches don't match. new_psm must be head of branch,
* so psm is oldest rev. on branch. or oldest
* revision overall. if former, derive predecessor.
* use get_branch to chop another rev. off of string.
*
* FIXME:
* There's also a weird case. it's possible to just re-number
* a revision to any future revision. i.e. rev 1.9 becomes 2.0
* It's not widely used. In those cases of discontinuity,
* we end up stamping the predecessor as 'INITIAL' incorrectly
*
*/
if (!get_branch(pre, post))
{
set_psm_initial(psm);
return;
}
psm->pre_rev = file_get_revision(psm->file, pre);
list_add(&psm->post_rev->link, &psm->pre_rev->branch_children);
}
static void check_print_patch_set(PatchSet * ps)
{
if (ps->psid < 0)
return;
/* the funk_factor overrides the restrict_tag_start and end */
if (ps->funk_factor == FNK_SHOW_SOME || ps->funk_factor == FNK_SHOW_ALL)
goto ok;
if (ps->funk_factor == FNK_HIDE_ALL)
return;
if (ps->psid <= restrict_tag_ps_start)
{
if (ps->psid == restrict_tag_ps_start)
debug(DEBUG_STATUS, "PatchSet %d matches tag %s.", ps->psid, restrict_tag_start);
return;
}
if (ps->psid > restrict_tag_ps_end)
return;
ok:
if (restrict_date_start > 0 &&
(ps->date < restrict_date_start ||
(restrict_date_end > 0 && ps->date > restrict_date_end)))
return;
if (restrict_author && strcmp(restrict_author, ps->author) != 0)
return;
if (have_restrict_log && regexec(&restrict_log, ps->descr, 0, NULL, 0) != 0)
return;
if (have_restrict_file && !patch_set_member_regex(ps, &restrict_file))
return;
if (restrict_branch && !patch_set_affects_branch(ps, restrict_branch))
return;
if (!list_empty(&show_patch_set_ranges))
{
struct list_head * next = show_patch_set_ranges.next;
while (next != &show_patch_set_ranges)
{
PatchSetRange *range = list_entry(next, PatchSetRange, link);
if (range->min_counter <= ps->psid &&
ps->psid <= range->max_counter)
{
break;
}
next = next->next;
}
if (next == &show_patch_set_ranges)
return;
}
if (patch_set_dir)
{
char path[PATH_MAX];
snprintf(path, PATH_MAX, "%s/%d.patch", patch_set_dir, ps->psid);
fflush(stdout);
close(1);
if (open(path, O_WRONLY|O_TRUNC|O_CREAT, 0666) < 0)
{
debug(DEBUG_SYSERROR, "can't open patch file %s", path);
exit(1);
}
fprintf(stderr, "Directing PatchSet %d to file %s\n", ps->psid, path);
}
/*
* If the summary_first option is in effect, there will be
* two passes through the tree. the first with summary_first == 1
* the second with summary_first == 2. if the option is not
* in effect, there will be one pass with summary_first == 0
*
* When the -s option is in effect, the show_patch_set_ranges
* list will be non-empty.
*/
if (summary_first <= 1)
print_patch_set(ps);
if (do_diff && summary_first != 1)
do_cvs_diff(ps);
fflush(stdout);
}
static void print_patch_set(PatchSet * ps)
{
struct tm *tm;
struct list_head * next;
const char * funk = "";
tm = localtime(&ps->date);
next = ps->members.next;
funk = fnk_descr[ps->funk_factor];
/* this '---...' is different from the 28 hyphens that separate cvs log output */
printf("---------------------\n");
printf("PatchSet %d %s\n", ps->psid, funk);
printf("Date: %d/%02d/%02d %02d:%02d:%02d\n",
1900 + tm->tm_year, tm->tm_mon + 1, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
printf("Author: %s\n", ps->author);
printf("Branch: %s\n", ps->branch);
if (ps->ancestor_branch)
printf("Ancestor branch: %s\n", ps->ancestor_branch);
printf("Tag: %s %s\n", ps->tag ? ps->tag : "(none)", tag_flag_descr[ps->tag_flags]);
printf("Log:\n%s\n", ps->descr);
printf("Members: \n");
while (next != &ps->members)
{
PatchSetMember * psm = list_entry(next, PatchSetMember, link);
if (ps->funk_factor == FNK_SHOW_SOME && psm->bad_funk)
funk = "(BEFORE START TAG)";
else if (ps->funk_factor == FNK_HIDE_SOME && !psm->bad_funk)
funk = "(AFTER END TAG)";
else
funk = "";
printf("\t%s:%s->%s%s %s\n",
psm->file->filename,
psm->pre_rev ? psm->pre_rev->rev : "INITIAL",
psm->post_rev->rev,
psm->post_rev->dead ? "(DEAD)": "",
funk);
next = next->next;
}
printf("\n");
}
/* walk all the patchsets to assign monotonic psid,
* and to establish branch ancestry
*/
static void assign_patchset_id(PatchSet * ps)
{
/*
* Ignore the 'BRANCH ADD' patchsets
*/
if (!ps->branch_add)
{
ps_counter++;
ps->psid = ps_counter;
if (track_branch_ancestry && strcmp(ps->branch, "HEAD") != 0)
{
PatchSet * head_ps = (PatchSet*)get_hash_object(branch_heads, ps->branch);
if (!head_ps)
{
head_ps = ps;
put_hash_object(branch_heads, ps->branch, head_ps);
}
determine_branch_ancestor(ps, head_ps);
}
}
else
{
ps->psid = -1;
}
}
static int compare_rev_strings(const char * cr1, const char * cr2)
{
char r1[REV_STR_MAX];
char r2[REV_STR_MAX];
char *s1 = r1, *s2 = r2;
char *p1, *p2;
int n1, n2;
strcpy(s1, cr1);
strcpy(s2, cr2);
for (;;)
{
p1 = strchr(s1, '.');
p2 = strchr(s2, '.');
if (p1) *p1++ = 0;
if (p2) *p2++ = 0;
n1 = atoi(s1);
n2 = atoi(s2);
if (n1 < n2)
return -1;
if (n1 > n2)
return 1;
if (!p1 && p2)
return -1;
if (p1 && !p2)
return 1;
if (!p1 && !p2)
return 0;
s1 = p1;
s2 = p2;
}
}
static int compare_patch_sets_by_members(const PatchSet * ps1, const PatchSet * ps2)
{
struct list_head * i;
for (i = ps1->members.next; i != &ps1->members; i = i->next)
{
PatchSetMember * psm1 = list_entry(i, PatchSetMember, link);
struct list_head * j;
for (j = ps2->members.next; j != &ps2->members; j = j->next)
{
PatchSetMember * psm2 = list_entry(j, PatchSetMember, link);
if (psm1->file == psm2->file)
{
int ret = compare_rev_strings(psm1->post_rev->rev, psm2->post_rev->rev);
//debug(DEBUG_APPMSG1, "file: %s comparing %s %s = %d", psm1->file->filename, psm1->post_rev->rev, psm2->post_rev->rev, ret);
return ret;
}
}
}
return 0;
}
static int compare_patch_sets_bk(const void * v_ps1, const void * v_ps2)
{
const PatchSet * ps1 = (const PatchSet *)v_ps1;
const PatchSet * ps2 = (const PatchSet *)v_ps2;
long diff;
diff = ps1->date - ps2->date;
return (diff < 0) ? -1 : ((diff > 0) ? 1 : 0);
}
static int compare_patch_sets(const void * v_ps1, const void * v_ps2)
{
const PatchSet * ps1 = (const PatchSet *)v_ps1;
const PatchSet * ps2 = (const PatchSet *)v_ps2;
long diff;
int ret;
time_t d, min, max;
/* We order by (author, descr, branch, members, date), but because of the fuzz factor
* we treat times within a certain distance as equal IFF the author
* and descr match.
*/
ret = strcmp(ps1->author, ps2->author);
if (ret)
return ret;
ret = strcmp(ps1->descr, ps2->descr);
if (ret)
return ret;
ret = strcmp(ps1->branch, ps2->branch);
if (ret)
return ret;
ret = compare_patch_sets_by_members(ps1, ps2);
if (ret)
return ret;
/*
* one of ps1 or ps2 is new. the other should have the min_date
* and max_date set to a window opened by the fuzz_factor
*/
if (ps1->min_date == 0)
{
d = ps1->date;
min = ps2->min_date;
max = ps2->max_date;
}
else if (ps2->min_date == 0)
{
d = ps2->date;
min = ps1->min_date;
max = ps1->max_date;
}
else
{
debug(DEBUG_APPERROR, "how can we have both patchsets pre-existing?");
exit(1);
}
if (min < d && d < max)
return 0;
diff = ps1->date - ps2->date;
return (diff < 0) ? -1 : 1;
}
static int compare_patch_sets_bytime_list(struct list_head * l1, struct list_head * l2)
{
const PatchSet *ps1 = list_entry(l1, PatchSet, all_link);
const PatchSet *ps2 = list_entry(l2, PatchSet, all_link);
return compare_patch_sets_bytime(ps1, ps2);
}
static int compare_patch_sets_bytime(const PatchSet * ps1, const PatchSet * ps2)
{
long diff;
int ret;
/* When doing a time-ordering of patchsets, we don't need to
* fuzzy-match the time. We've already done fuzzy-matching so we
* know that insertions are unique at this point.
*/
diff = ps1->date - ps2->date;
if (diff)
return (diff < 0) ? -1 : 1;
ret = compare_patch_sets_by_members(ps1, ps2);
if (ret)
return ret;
ret = strcmp(ps1->author, ps2->author);
if (ret)
return ret;
ret = strcmp(ps1->descr, ps2->descr);
if (ret)
return ret;
ret = strcmp(ps1->branch, ps2->branch);
return ret;
}
static int is_revision_metadata(const char * buff)
{
char * p1, *p2;
int len;
if (!(p1 = strchr(buff, ':')))
return 0;
p2 = strchr(buff, ' ');
if (p2 && p2 < p1)
return 0;
len = strlen(buff);
/* lines have LF at end */
if (len > 1 && buff[len - 2] == ';')
return 1;
return 0;
}
static int patch_set_member_regex(PatchSet * ps, regex_t * reg)
{
struct list_head * next = ps->members.next;
while (next != &ps->members)
{
PatchSetMember * psm = list_entry(next, PatchSetMember, link);
if (regexec(&restrict_file, psm->file->filename, 0, NULL, 0) == 0)
return 1;
next = next->next;
}
return 0;
}
static int patch_set_affects_branch(PatchSet * ps, const char * branch)
{
struct list_head * next;
for (next = ps->members.next; next != &ps->members; next = next->next)
{
PatchSetMember * psm = list_entry(next, PatchSetMember, link);
/*
* slight hack. if -r is specified, and this patchset
* is 'before' the tag, but is FNK_SHOW_SOME, only
* check if the 'after tag' revisions affect
* the branch. this is especially important when
* the tag is a branch point.
*/
if (ps->funk_factor == FNK_SHOW_SOME && psm->bad_funk)
continue;
if (revision_affects_branch(psm->post_rev, branch))
return 1;
}
return 0;
}
static void do_cvs_diff(PatchSet * ps)
{
struct list_head * next;
const char * dtype;
const char * dopts;
const char * utype;
char use_rep_path[PATH_MAX];
char esc_use_rep_path[PATH_MAX];
fflush(stdout);
fflush(stderr);
/*
* if cvs_direct is not in effect, and diff options are specified,
* then we have to use diff instead of rdiff and we'll get a -p0
* diff (instead of -p1) [in a manner of speaking]. So to make sure
* that the add/remove diffs get generated likewise, we need to use
* 'update' instead of 'co'
*
* cvs_direct will always use diff (not rdiff), but will also always
* generate -p1 diffs.
*/
if (diff_opts == NULL)
{
dopts = "-u";
dtype = "rdiff";
utype = "co";
sprintf(use_rep_path, "%s/", repository_path);
/* the rep_path may contain characters that the shell will barf on */
escape_filename(esc_use_rep_path, PATH_MAX, use_rep_path);
}
else
{
dopts = diff_opts;
dtype = "diff";
utype = "update";
use_rep_path[0] = 0;
esc_use_rep_path[0] = 0;
}
for (next = ps->members.next; next != &ps->members; next = next->next)
{
PatchSetMember * psm = list_entry(next, PatchSetMember, link);
char cmdbuff[PATH_MAX * 2+1];
char esc_file[PATH_MAX];
int ret, check_ret = 0;
cmdbuff[0] = 0;
cmdbuff[PATH_MAX*2] = 0;
/* the filename may contain characters that the shell will barf on */
escape_filename(esc_file, PATH_MAX, psm->file->filename);
/*
* Check the patchset funk. we may not want to diff this particular file
*/
if (ps->funk_factor == FNK_SHOW_SOME && psm->bad_funk)
{
printf("Index: %s\n", psm->file->filename);
printf("===================================================================\n");
printf("*** Member not diffed, before start tag\n");
continue;
}
else if (ps->funk_factor == FNK_HIDE_SOME && !psm->bad_funk)
{
printf("Index: %s\n", psm->file->filename);
printf("===================================================================\n");
printf("*** Member not diffed, after end tag\n");
continue;
}
/*
* When creating diffs for INITIAL or DEAD revisions, we have to use 'cvs co'
* or 'cvs update' to get the file, because cvs won't generate these diffs.
* The problem is that this must be piped to diff, and so the resulting
* diff doesn't contain the filename anywhere! (diff between - and /dev/null).
* sed is used to replace the '-' with the filename.
*
* It's possible for pre_rev to be a 'dead' revision. This happens when a file
* is added on a branch. post_rev will be dead dead for remove
*/
if (!psm->pre_rev || psm->pre_rev->dead || psm->post_rev->dead)
{
int cr;
const char * rev;
if (!psm->pre_rev || psm->pre_rev->dead)
{
cr = 1;
rev = psm->post_rev->rev;
}
else
{
cr = 0;
rev = psm->pre_rev->rev;
}
if (cvs_direct_ctx)
{
/* cvs_rupdate does the pipe through diff thing internally */
cvs_rupdate(cvs_direct_ctx, repository_path, psm->file->filename, rev, cr, dopts);
}
else
{
snprintf(cmdbuff, PATH_MAX * 2, "cvs %s %s %s -p -r %s %s%s | diff %s %s /dev/null %s | sed -e '%s s|^\\([+-][+-][+-]\\) -|\\1 %s%s|g'",
compress_arg, norc, utype, rev, esc_use_rep_path, esc_file, dopts,
cr?"":"-",cr?"-":"", cr?"2":"1",
use_rep_path, psm->file->filename);
}
}
else
{
/* a regular diff */
if (cvs_direct_ctx)
{
cvs_diff(cvs_direct_ctx, repository_path, psm->file->filename, psm->pre_rev->rev, psm->post_rev->rev, dopts);
}
else
{
/* 'cvs diff' exit status '1' is ok, just means files are different */
if (strcmp(dtype, "diff") == 0)
check_ret = 1;
snprintf(cmdbuff, PATH_MAX * 2, "cvs %s %s %s %s -r %s -r %s %s%s",
compress_arg, norc, dtype, dopts, psm->pre_rev->rev, psm->post_rev->rev,
esc_use_rep_path, esc_file);
}
}
/*
* my_system doesn't block signals the way system does.
* if ctrl-c is pressed while in there, we probably exit
* immediately and hope the shell has sent the signal
* to all of the process group members
*/
if (cmdbuff[0] && (ret = my_system(cmdbuff)))
{
int stat = WEXITSTATUS(ret);
/*
* cvs diff returns 1 in exit status for 'files are different'
* so use a better method to check for failure
*/
if (stat < 0 || stat > check_ret || WIFSIGNALED(ret))
{
debug(DEBUG_APPERROR, "system command returned non-zero exit status: %d: aborting", stat);
exit(1);
}
}
}
}
static CvsFileRevision * parse_revision(CvsFile * file, char * rev_str)
{
char * p;
/* The "revision" log line can include extra information
* including who is locking the file --- strip that out.
*/
p = rev_str;
while (isdigit(*p) || *p == '.')
p++;
*p = 0;
return cvs_file_add_revision(file, rev_str);
}
CvsFileRevision * cvs_file_add_revision(CvsFile * file, const char * rev_str)
{
CvsFileRevision * rev;
if (!(rev = (CvsFileRevision*)get_hash_object(file->revisions, rev_str)))
{
rev = (CvsFileRevision*)calloc(1, sizeof(*rev));
rev->rev = get_string(rev_str);
rev->file = file;
rev->branch = NULL;
rev->present = 0;
rev->pre_psm = NULL;
rev->post_psm = NULL;
INIT_LIST_HEAD(&rev->branch_children);
INIT_LIST_HEAD(&rev->tags);
put_hash_object_ex(file->revisions, rev->rev, rev, HT_NO_KEYCOPY, NULL, NULL);
debug(DEBUG_STATUS, "added revision %s to file %s", rev_str, file->filename);
}
else
{
debug(DEBUG_STATUS, "found revision %s to file %s", rev_str, file->filename);
}
/*
* note: we are guaranteed to get here at least once with 'have_branches' == 1.
* we may pass through once before this, because of symbolic tags, then once
* always when processing the actual revision logs
*
* rev->branch will always be set to something, maybe "HEAD"
*/
if (!rev->branch && file->have_branches)
{
char branch_str[REV_STR_MAX];
/* in the cvs cvs repository (ccvs) there are tagged versions
* that don't exist. let's mark every 'known to exist'
* version
*/
rev->present = 1;
/* determine the branch this revision was committed on */
if (!get_branch(branch_str, rev->rev))
{
debug(DEBUG_APPERROR, "invalid rev format %s", rev->rev);
exit(1);
}
rev->branch = (char*)get_hash_object(file->branches, branch_str);
/* if there's no branch and it's not on the trunk, blab */
if (!rev->branch)
{
if (get_branch(branch_str, branch_str))
{
debug(DEBUG_APPMSG1, "WARNING: revision %s of file %s on unnamed branch", rev->rev, rev->file->filename);
rev->branch = "#CVSPS_NO_BRANCH";
}
else
{
rev->branch = "HEAD";
}
}
debug(DEBUG_STATUS, "revision %s of file %s on branch %s", rev->rev, rev->file->filename, rev->branch);
}
return rev;
}
CvsFile * create_cvsfile()
{
CvsFile * f = (CvsFile*)calloc(1, sizeof(*f));
if (!f)
return NULL;
f->revisions = create_hash_table(53);
f->branches = create_hash_table(13);
f->branches_sym = create_hash_table(13);
f->symbols = create_hash_table(253);
f->have_branches = 0;
if (!f->revisions || !f->branches || !f->branches_sym)
{
if (f->branches)
destroy_hash_table(f->branches, NULL);
if (f->revisions)
destroy_hash_table(f->revisions, NULL);
free(f);
return NULL;
}
return f;
}
static PatchSet * create_patch_set()
{
PatchSet * ps = (PatchSet*)calloc(1, sizeof(*ps));;
if (ps)
{
INIT_LIST_HEAD(&ps->members);
ps->psid = -1;
ps->date = 0;
ps->min_date = 0;
ps->max_date = 0;
ps->descr = NULL;
ps->author = NULL;
ps->tag = NULL;
ps->tag_flags = 0;
ps->branch_add = 0;
ps->funk_factor = 0;
ps->ancestor_branch = NULL;
CLEAR_LIST_NODE(&ps->collision_link);
}
return ps;
}
PatchSetMember * create_patch_set_member()
{
PatchSetMember * psm = (PatchSetMember*)calloc(1, sizeof(*psm));
psm->pre_rev = NULL;
psm->post_rev = NULL;
psm->ps = NULL;
psm->file = NULL;
psm->bad_funk = 0;
return psm;
}
static PatchSetRange * create_patch_set_range()
{
PatchSetRange * psr = (PatchSetRange*)calloc(1, sizeof(*psr));
return psr;
}
CvsFileRevision * file_get_revision(CvsFile * file, const char * r)
{
CvsFileRevision * rev;
if (strcmp(r, "INITIAL") == 0)
return NULL;
rev = (CvsFileRevision*)get_hash_object(file->revisions, r);
if (!rev)
{
debug(DEBUG_APPERROR, "request for non-existent rev %s in file %s", r, file->filename);
exit(1);
}
return rev;
}
/*
* Parse lines in the format:
*
* <white space>tag_name: <rev>;
*
* Handles both regular tags (these go into the symbols hash)
* and magic-branch-tags (second to last node of revision is 0)
* which go into branches and branches_sym hashes. Magic-branch
* format is hidden in CVS everwhere except the 'cvs log' output.
*/
static void parse_sym(CvsFile * file, char * sym)
{
char * tag = sym, *eot;
int leaf, final_branch = -1;
char rev[REV_STR_MAX];
char rev2[REV_STR_MAX];
while (*tag && isspace(*tag))
tag++;
if (!*tag)
return;
eot = strchr(tag, ':');
if (!eot)
return;
*eot = 0;
eot += 2;
if (!get_branch_ext(rev, eot, &leaf))
{
debug(DEBUG_APPERROR, "malformed revision");
exit(1);
}
/*
* get_branch_ext will leave final_branch alone
* if there aren't enough '.' in string
*/
get_branch_ext(rev2, rev, &final_branch);
if (final_branch == 0)
{
snprintf(rev, REV_STR_MAX, "%s.%d", rev2, leaf);
debug(DEBUG_STATUS, "got sym: %s for %s", tag, rev);
cvs_file_add_branch(file, rev, tag);
}
else
{
strcpy(rev, eot);
chop(rev);
/* see cvs manual: what is this vendor tag? */
if (is_vendor_branch(rev))
cvs_file_add_branch(file, rev, tag);
else
cvs_file_add_symbol(file, rev, tag);
}
}
void cvs_file_add_symbol(CvsFile * file, const char * rev_str, const char * p_tag_str)
{
CvsFileRevision * rev;
GlobalSymbol * sym;
Tag * tag;
/* get a permanent storage string */
char * tag_str = get_string(p_tag_str);
debug(DEBUG_STATUS, "adding symbol to file: %s %s->%s", file->filename, tag_str, rev_str);
rev = cvs_file_add_revision(file, rev_str);
put_hash_object_ex(file->symbols, tag_str, rev, HT_NO_KEYCOPY, NULL, NULL);
/*
* check the global_symbols
*/
sym = (GlobalSymbol*)get_hash_object(global_symbols, tag_str);
if (!sym)
{
sym = (GlobalSymbol*)malloc(sizeof(*sym));
sym->tag = tag_str;
sym->ps = NULL;
INIT_LIST_HEAD(&sym->tags);
put_hash_object_ex(global_symbols, sym->tag, sym, HT_NO_KEYCOPY, NULL, NULL);
}
tag = (Tag*)malloc(sizeof(*tag));
tag->tag = tag_str;
tag->rev = rev;
tag->sym = sym;
list_add(&tag->global_link, &sym->tags);
list_add(&tag->rev_link, &rev->tags);
}
char * cvs_file_add_branch(CvsFile * file, const char * rev, const char * tag)
{
char * new_tag;
char * new_rev;
if (get_hash_object(file->branches, rev))
{
debug(DEBUG_STATUS, "attempt to add existing branch %s:%s to %s",
rev, tag, file->filename);
return NULL;
}
/* get permanent storage for the strings */
new_tag = get_string(tag);
new_rev = get_string(rev);
put_hash_object_ex(file->branches, new_rev, new_tag, HT_NO_KEYCOPY, NULL, NULL);
put_hash_object_ex(file->branches_sym, new_tag, new_rev, HT_NO_KEYCOPY, NULL, NULL);
return new_tag;
}
/*
* Resolve each global symbol to a PatchSet. This is
* not necessarily doable, because tagging isn't
* necessarily done to the project as a whole, and
* it's possible that no tag is valid for all files
* at a single point in time. We check for that
* case though.
*
* Implementation: the most recent PatchSet containing
* a revision (post_rev) tagged by the symbol is considered
* the 'tagged' PatchSet.
*/
static void resolve_global_symbols()
{
struct hash_entry * he_sym;
reset_hash_iterator(global_symbols);
while ((he_sym = next_hash_entry(global_symbols)))
{
GlobalSymbol * sym = (GlobalSymbol*)he_sym->he_obj;
PatchSet * ps;
struct list_head * next;
debug(DEBUG_STATUS, "resolving global symbol %s", sym->tag);
/*
* First pass, determine the most recent PatchSet with a
* revision tagged with the symbolic tag. This is 'the'
* patchset with the tag
*/
for (next = sym->tags.next; next != &sym->tags; next = next->next)
{
Tag * tag = list_entry(next, Tag, global_link);
CvsFileRevision * rev = tag->rev;
/* FIXME:test for rev->post_psm from DEBIAN. not sure how this could happen */
if (!rev->present || !rev->post_psm)
{
struct list_head *tmp = next->prev;
debug(DEBUG_APPERROR, "revision %s of file %s is tagged but not present",
rev->rev, rev->file->filename);
/* FIXME: memleak */
list_del(next);
next = tmp;
continue;
}
ps = rev->post_psm->ps;
if (!sym->ps || ps->date > sym->ps->date)
sym->ps = ps;
}
/* convenience variable */
ps = sym->ps;
if (!ps)
{
debug(DEBUG_APPERROR, "no patchset for tag %s", sym->tag);
return;
}
ps->tag = sym->tag;
/* check if this ps is one of the '-r' patchsets */
if (restrict_tag_start && strcmp(restrict_tag_start, ps->tag) == 0)
restrict_tag_ps_start = ps->psid;
/* the second -r implies -b */
if (restrict_tag_end && strcmp(restrict_tag_end, ps->tag) == 0)
{
restrict_tag_ps_end = ps->psid;
if (restrict_branch)
{
if (strcmp(ps->branch, restrict_branch) != 0)
{
debug(DEBUG_APPMSG1,
"WARNING: -b option and second -r have conflicting branches: %s %s",
restrict_branch, ps->branch);
}
}
else
{
debug(DEBUG_APPMSG1, "NOTICE: implicit branch restriction set to %s", ps->branch);
restrict_branch = ps->branch;
}
}
/*
* Second pass.
* check if this is an invalid patchset,
* check which members are invalid. determine
* the funk factor etc.
*/
for (next = sym->tags.next; next != &sym->tags; next = next->next)
{
Tag * tag = list_entry(next, Tag, global_link);
CvsFileRevision * rev = tag->rev;
CvsFileRevision * next_rev = rev_follow_branch(rev, ps->branch);
if (!next_rev)
continue;
/*
* we want the 'tagged revision' to be valid until after
* the date of the 'tagged patchset' or else there's something
* funky going on
*/
if (next_rev->post_psm->ps->date < ps->date)
{
int flag = check_rev_funk(ps, next_rev);
debug(DEBUG_STATUS, "file %s revision %s tag %s: TAG VIOLATION %s",
rev->file->filename, rev->rev, sym->tag, tag_flag_descr[flag]);
ps->tag_flags |= flag;
}
}
}
}
static int revision_affects_branch(CvsFileRevision * rev, const char * branch)
{
/* special case the branch called 'HEAD' */
if (strcmp(branch, "HEAD") == 0)
{
/* look for only one '.' in rev */
char * p = strchr(rev->rev, '.');
if (p && !strchr(p + 1, '.'))
return 1;
}
else
{
char * branch_rev = (char*)get_hash_object(rev->file->branches_sym, branch);
if (branch_rev)
{
char post_rev[REV_STR_MAX];
char branch[REV_STR_MAX];
int file_leaf, branch_leaf;
strcpy(branch, branch_rev);
/* first get the branch the file rev is on */
if (get_branch_ext(post_rev, rev->rev, &file_leaf))
{
branch_leaf = file_leaf;
/* check against branch and all branch ancestor branches */
do
{
debug(DEBUG_STATUS, "check %s against %s for %s", branch, post_rev, rev->file->filename);
if (strcmp(branch, post_rev) == 0)
return (file_leaf <= branch_leaf);
}
while(get_branch_ext(branch, branch, &branch_leaf));
}
}
}
return 0;
}
static int count_dots(const char * p)
{
int dots = 0;
while (*p)
if (*p++ == '.')
dots++;
return dots;
}
/*
* When importing vendor sources, (apparently people do this)
* the code is added on a 'vendor' branch, which, for some reason
* doesn't use the magic-branch-tag format. Try to detect that now
*/
static int is_vendor_branch(const char * rev)
{
return !(count_dots(rev)&1);
}
void patch_set_add_member(PatchSet * ps, PatchSetMember * psm)
{
/* check if a member for the same file already exists, if so
* put this PatchSet on the collisions list
*/
struct list_head * next;
for (next = ps->members.next; next != &ps->members; next = next->next)
{
PatchSetMember * m = list_entry(next, PatchSetMember, link);
if (m->file == psm->file && ps->collision_link.next == NULL)
list_add(&ps->collision_link, &collisions);
}
psm->ps = ps;
list_add(&psm->link, ps->members.prev);
}
static void set_psm_initial(PatchSetMember * psm)
{
psm->pre_rev = NULL;
if (psm->post_rev->dead)
{
/*
* we expect a 'file xyz initially added on branch abc' here
* but there can only be one such member in a given patchset
*/
if (psm->ps->branch_add)
debug(DEBUG_APPMSG1, "WARNING: branch_add already set!");
psm->ps->branch_add = 1;
}
}
/*
* look at all revisions starting at rev and going forward until
* ps->date and see whether they are invalid or just funky.
*/
static int check_rev_funk(PatchSet * ps, CvsFileRevision * rev)
{
int retval = TAG_FUNKY;
while (rev)
{
PatchSet * next_ps = rev->post_psm->ps;
struct list_head * next;
if (next_ps->date > ps->date)
break;
debug(DEBUG_STATUS, "ps->date %d next_ps->date %d rev->rev %s rev->branch %s",
ps->date, next_ps->date, rev->rev, rev->branch);
/*
* If the ps->tag is one of the two possible '-r' tags
* then the funkyness is even more important.
*
* In the restrict_tag_start case, this next_ps is chronologically
* before ps, but tagwise after, so set the funk_factor so it will
* be included.
*
* The restrict_tag_end case is similar, but backwards.
*
* Start assuming the HIDE/SHOW_ALL case, we will determine
* below if we have a split ps case
*/
if (restrict_tag_start && strcmp(ps->tag, restrict_tag_start) == 0)
next_ps->funk_factor = FNK_SHOW_ALL;
if (restrict_tag_end && strcmp(ps->tag, restrict_tag_end) == 0)
next_ps->funk_factor = FNK_HIDE_ALL;
/*
* if all of the other members of this patchset are also 'after' the tag
* then this is a 'funky' patchset w.r.t. the tag. however, if some are
* before then the patchset is 'invalid' w.r.t. the tag, and we mark
* the members individually with 'bad_funk' ,if this tag is the
* '-r' tag. Then we can actually split the diff on this patchset
*/
for (next = next_ps->members.next; next != &next_ps->members; next = next->next)
{
PatchSetMember * psm = list_entry(next, PatchSetMember, link);
if (before_tag(psm->post_rev, ps->tag))
{
retval = TAG_INVALID;
/* only set bad_funk for one of the -r tags */
if (next_ps->funk_factor)
{
psm->bad_funk = 1;
next_ps->funk_factor =
(next_ps->funk_factor == FNK_SHOW_ALL) ? FNK_SHOW_SOME : FNK_HIDE_SOME;
}
debug(DEBUG_APPMSG1,
"WARNING: Invalid PatchSet %d, Tag %s:\n"
" %s:%s=after, %s:%s=before. Treated as 'before'",
next_ps->psid, ps->tag,
rev->file->filename, rev->rev,
psm->post_rev->file->filename, psm->post_rev->rev);
}
}
rev = rev_follow_branch(rev, ps->branch);
}
return retval;
}
/* determine if the revision is before the tag */
static int before_tag(CvsFileRevision * rev, const char * tag)
{
CvsFileRevision * tagged_rev = (CvsFileRevision*)get_hash_object(rev->file->symbols, tag);
int retval = 0;
if (tagged_rev &&
revision_affects_branch(rev, tagged_rev->branch) &&
rev->post_psm->ps->date <= tagged_rev->post_psm->ps->date)
retval = 1;
debug(DEBUG_STATUS, "before_tag: %s %s %s %s %d",
rev->file->filename, tag, rev->rev, tagged_rev ? tagged_rev->rev : "N/A", retval);
return retval;
}
/* get the next revision from this one following branch if possible */
/* FIXME: not sure if this needs to follow branches leading up to branches? */
static CvsFileRevision * rev_follow_branch(CvsFileRevision * rev, const char * branch)
{
struct list_head * next;
/* check for 'main line of inheritance' */
if (strcmp(rev->branch, branch) == 0)
return rev->pre_psm ? rev->pre_psm->post_rev : NULL;
/* look down branches */
for (next = rev->branch_children.next; next != &rev->branch_children; next = next->next)
{
CvsFileRevision * next_rev = list_entry(next, CvsFileRevision, link);
//debug(DEBUG_STATUS, "SCANNING BRANCH CHILDREN: %s %s", next_rev->branch, branch);
if (strcmp(next_rev->branch, branch) == 0)
return next_rev;
}
return NULL;
}
static void check_norc(int argc, char * argv[])
{
int i = 1;
while (i < argc)
{
if (strcmp(argv[i], "--norc") == 0)
{
norc = "-f";
break;
}
i++;
}
}
static void determine_branch_ancestor(PatchSet * ps, PatchSet * head_ps)
{
struct list_head * next;
CvsFileRevision * rev;
/* PatchSet 1 has no ancestor */
if (ps->psid == 1)
return;
/* HEAD branch patchsets have no ancestry, but callers should know that */
if (strcmp(ps->branch, "HEAD") == 0)
{
debug(DEBUG_APPMSG1, "WARNING: no branch ancestry for HEAD");
return;
}
for (next = ps->members.next; next != &ps->members; next = next->next)
{
PatchSetMember * psm = list_entry(next, PatchSetMember, link);
rev = psm->pre_rev;
int d1, d2;
/* the reason this is at all complicated has to do with a
* branch off of a branch. it is possible (and indeed
* likely) that some file would not have been modified
* from the initial branch point to the branch-off-branch
* point, and therefore the branch-off-branch point is
* really branch-off-HEAD for that specific member (file).
* in that case, rev->branch will say HEAD but we want
* to know the symbolic name of the first branch
* so we continue to look member after member until we find
* the 'deepest' branching. deepest can actually be determined
* by considering the revision currently indicated by
* ps->ancestor_branch (by symbolic lookup) and rev->rev. the
* one with more dots wins
*
* also, the first commit in which a branch-off-branch is
* mentioned may ONLY modify files never committed since
* original branch-off-HEAD was created, so we have to keep
* checking, ps after ps to be sure to get the deepest ancestor
*
* note: rev is the pre-commit revision, not the post-commit
*/
if (!head_ps->ancestor_branch)
d1 = 0;
else if (strcmp(ps->branch, rev->branch) == 0)
continue;
else if (strcmp(head_ps->ancestor_branch, "HEAD") == 0)
d1 = 1;
else {
/* branch_rev may not exist if the file was added on this branch for example */
const char * branch_rev = (char *)get_hash_object(rev->file->branches_sym, head_ps->ancestor_branch);
d1 = branch_rev ? count_dots(branch_rev) : 1;
}
/* HACK: we sometimes pretend to derive from the import branch.
* just don't do that. this is the easiest way to prevent...
*/
d2 = (strcmp(rev->rev, "1.1.1.1") == 0) ? 0 : count_dots(rev->rev);
if (d2 > d1)
head_ps->ancestor_branch = rev->branch;
//printf("-----> %d ancestry %s %s %s\n", ps->psid, ps->branch, head_ps->ancestor_branch, rev->file->filename);
}
}
static void handle_collisions()
{
struct list_head *next;
for (next = collisions.next; next != &collisions; next = next->next)
{
PatchSet * ps = list_entry(next, PatchSet, collision_link);
printf("PatchSet %d has collisions\n", ps->psid);
}
}
void walk_all_patch_sets(void (*action)(PatchSet *))
{
struct list_head * next;;
for (next = all_patch_sets.next; next != &all_patch_sets; next = next->next) {
PatchSet * ps = list_entry(next, PatchSet, all_link);
action(ps);
}
}
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