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#include "config.h"
#include "utils.h"
#include <stdio.h>
#include <errno.h>
#include <X11/Intrinsic.h>
#include "mesg.h"
#include "mesg_strings.h"
#include "error_hnds.h"
#include "server.h"
#include "resources.h"
#include "news.h"
#include "activecache.h"
#include "cache.h"
void active_cache_read(filename)
char *filename;
{
FILE *input;
static char *line = 0, *ptr;
static int line_size;
int ret, len;
if (! (input = fopen(filename, "r"))) {
if (errno != ENOENT)
mesgPane(XRN_SERIOUS, 0, CANT_OPEN_FILE_MSG, filename, errmsg(errno));
return;
}
if (! line) {
line_size = 80; /* arbitrary starting value */
line = XtMalloc(line_size);
ptr = line;
}
while (fgets(ptr, line_size - (ptr - line), input)) {
if (ptr[(len = strlen(ptr))-1] != '\n') {
if ((len + (ptr - line)) == (line_size - 1)) {
len += ptr - line;
line_size *= 2;
line = XtRealloc(line, line_size);
ptr = line + len;
}
else {
ptr += len;
}
continue;
}
ptr = line;
if (*line == CACHE_ACTIVE_CHAR) {
switch (ret = parse_active_line(line + 1, TRUE, 0)) {
case ACTIVE_IGNORED:
case ACTIVE_NEW:
case ACTIVE_OLD:
break;
case ACTIVE_BOGUS:
mesgPane(XRN_SERIOUS, 0, BOGUS_ACTIVE_CACHE_MSG, line);
break;
default:
mesgPane(XRN_SERIOUS, 0, UNKNOWN_FUNC_RESPONSE_MSG, ret,
"parse_active_line", "active_cache_read");
break;
}
}
}
(void) fclose(input);
}
/*
Write the active cache based on the newsgroup array. Ignored
newsgroups are not written. Returns 0 on success, 1 on failure.
*/
#define WRITE_LINE { \
if (fputs(line, output) == EOF) { \
mesgPane(XRN_SERIOUS, 0, ERROR_WRITING_SAVE_FILE_MSG, tmpfile, errmsg(errno)); \
(void) fclose(input); \
(void) fclose(output); \
XtFree(tmpfile); \
return -1; \
} \
}
int active_cache_write(
_ANSIDECL(char *, filename),
_ANSIDECL(struct newsgroup **, Newsrc),
_ANSIDECL(ng_num, num_groups),
_ANSIDECL(Boolean, write_entries)
)
_KNRDECL(char *, filename)
_KNRDECL(struct newsgroup **, Newsrc)
_KNRDECL(ng_num, num_groups)
_KNRDECL(Boolean, write_entries)
{
FILE *input, *output;
char *tmpfile;
char last_chopped = 0, last_active = 0;
char line[BUFSIZ];
ng_num i;
tmpfile = utTempFile(filename);
if (! (output = fopen(tmpfile, "w"))) {
mesgPane(XRN_SERIOUS, 0, CANT_OPEN_TEMP_MSG, tmpfile, errmsg(errno));
XtFree(tmpfile);
return -1;
}
if ((input = fopen(filename, "r"))) {
while (fgets(line, sizeof(line), input)) {
if (line[strlen(line) - 1] != '\n') {
if (last_chopped) {
if (! last_active) {
WRITE_LINE;
}
}
else {
if (*line == CACHE_ACTIVE_CHAR) {
last_active = 1;
}
else {
WRITE_LINE;
}
last_chopped = 1;
}
continue;
}
if (*line != CACHE_ACTIVE_CHAR)
WRITE_LINE;
}
(void) fclose(input);
}
else {
if (errno != ENOENT)
mesgPane(XRN_SERIOUS, 0, CANT_OPEN_FILE_MSG, filename, errmsg(errno));
}
if (write_entries) {
for (i = 0; i < num_groups; i++) {
(void) fprintf(output, "%c%s\n", CACHE_ACTIVE_CHAR,
unparse_active_line(Newsrc[i]));
if (ferror(output)) {
mesgPane(XRN_SERIOUS, 0, ERROR_WRITING_SAVE_FILE_MSG, tmpfile,
errmsg(errno));
(void) fclose(output);
XtFree(tmpfile);
return -1;
}
}
}
if (fclose(output) == EOF) {
mesgPane(XRN_SERIOUS, 0, ERROR_WRITING_SAVE_FILE_MSG, tmpfile,
errmsg(errno));
XtFree(tmpfile);
return -1;
}
if (rename(tmpfile, filename)) {
mesgPane(XRN_SERIOUS, 0, ERROR_RENAMING_MSG, tmpfile, filename,
errmsg(errno));
XtFree(tmpfile);
return -1;
}
XtFree(tmpfile);
return 0;
}
#undef WRITE_LINE
|
