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/* cfg.c - Read config files and provide lookup routines
Copyright (C) 1995-2002 The Free Software Foundation
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
This file is available from http://sourceforge.net/projects/latex2rtf/
Authors:
1995-1997 Ralf Schlatterbeck
1998-2000 Georg Lehner
2001-2002 Scott Prahl
* LEG200698 I would have prefered to make the reading of the language file
* separate, since the language is known some steps after reading the
* configuration files. Since the search functions rely on the index into
* configinfo this is not trivial. So I reread the language file to the array
* at the moment the name is known.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <ctype.h>
#include "main.h"
#include "convert.h"
#include "funct1.h"
#include "cfg.h"
#include "utils.h"
typedef struct ConfigInfoT {
char *filename;
ConfigEntryT **config_info;
int config_info_size;
int remove_leading_backslash;
} ConfigInfoT;
static ConfigInfoT configinfo[] = {
{"direct.cfg", NULL, 0, FALSE},
{"fonts.cfg", NULL, 0, FALSE},
{"ignore.cfg", NULL, 0, FALSE},
{"style.cfg", NULL, 0, FALSE},
{"english.cfg", NULL, 0, FALSE},
};
#define CONFIG_SIZE 5
#define BUFFER_INCREMENT 1024
char *ReadUptoMatch(FILE * infile, const char *scanchars);
/****************************************************************************
* purpose: compare-function for bsearch
* params: el1, el2: Config Entries to be compared
****************************************************************************/
static int cfg_compare(ConfigEntryT ** el1, ConfigEntryT ** el2)
{
/*diagnostics(1, "'%s'<=>'%s'", (**el1).TexCommand, (**el2).TexCommand);*/
return strcmp((**el1).TexCommand, (**el2).TexCommand);
}
/****************************************************************************
* purpose: append path to .cfg file name and open
return NULL upon failure,
return filepointer otherwise
****************************************************************************/
static FILE *try_path(const char *path, const char *cfg_file)
{
char *both;
FILE *fp;
char separator[2];
separator[0] = PATHSEP;
separator[1] = '\0';
if (path == NULL || cfg_file == NULL)
return NULL;
/* fix path ending if needed */
if (path[strlen(path)] != PATHSEP)
both = strdup_together3(path,separator,cfg_file);
else
both = strdup_together(path,cfg_file);
diagnostics(2, "trying to open '%s'", both);
fp = fopen(both, "rb");
free(both);
return fp;
}
/*****************************************************
* run through 'path' (from environment, e.g. $PATH)
* try to find a file called 'name'
* if 'subdir' is given, prepend it to 'name'
*****************************************************/
static FILE *open_path(const char *path, const char* name, const char* subdir)
{
FILE *fp = NULL;
char *pf = strdup(path);
char *p = pf;
while (NULL != p) {
char *p1 = strchr(p, ENVSEP);
if (NULL != p1)
*p1 = '\0';
if (NULL != subdir) {
char *pft = strdup_together(p, subdir);
fp = try_path(pft, name);
free(pft);
} else {
fp = try_path(p, name);
}
if (NULL != fp)
break;
p = (p1) ? p1 + 1 : NULL;
}
free(pf);
return fp;
}
/*
* if the environment variable 'env' is defined
* try to find a file called 'name' using it's contents
* as a path. if subdir is given prepend it to 'name'
*/
static FILE *open_env(const char *env, const char* name, const char*subdir)
{
FILE *result = NULL;
char *p = getenv(env);
if (NULL != p)
result = open_path(p,name,subdir);
return result;
}
FILE *open_cfg(const char *name, int quit_on_error)
/****************************************************************************
purpose: open config by trying multiple paths
****************************************************************************/
{
FILE *fp;
/* try path specified on the line */
fp = try_path(g_config_path, name);
if (fp)
return fp;
/* try the environment variable RTFPATH */
fp = open_env("RTFPATH", name, NULL);
if (NULL != fp) return fp;
/* try the environment variable PROGRAMFILES */
fp = open_env("PROGRAMFILES", name, "/latex2rtf/cfg");
if (NULL != fp) return fp;
/* last resort. try CFGDIR */
fp = open_path(CFGDIR, name, NULL);
if (NULL != fp) return fp;
/* failed ... give some feedback */
if (quit_on_error) {
diagnostics(WARNING, "Cannot open the latex2rtf config file '%s'",name);
diagnostics(WARNING, "Locate the directory containing the .cfg files and");
diagnostics(WARNING, " (1) define the environment variable RTFPATH, *or*");
diagnostics(WARNING, " (2) use command line path option \"-P /path/to/cfg/file\", *or*");
diagnostics(WARNING, " (3) recompile latex2rtf with CFGDIR defined properly");
diagnostics(WARNING, "Current RTFPATH: %s", getenv("RTFPATH"));
diagnostics(WARNING, "Current CFGDIR: %s", CFGDIR);
diagnostics(ERROR, " Giving up. Please don't hate me.");
}
return NULL;
}
static int read_cfg(FILE * cfgfile, ConfigEntryT *** pointer_array, int do_remove_backslash)
/****************************************************************************
* purpose: Read config file and provide sorted lookup table
****************************************************************************/
{
int bufindex = 0, bufsize = 0;
char *line, *cmdend;
if (*pointer_array == NULL) {
*pointer_array = (struct ConfigEntryT **) malloc(BUFFER_INCREMENT * sizeof(char *));
bufsize = BUFFER_INCREMENT;
if (*pointer_array == NULL)
diagnostics(ERROR, "Cannot allocate memory for pointer list");
}
while ((line = ReadUptoMatch(cfgfile, "\n")) != NULL) {
/* skip newline */
getc(cfgfile);
/* Skip leading white space */
while (isspace((unsigned char) *line))
line++;
/* Skip comment line */
if (*line == '#')
continue;
/* Skip blank line */
if (*line == '\0')
continue;
/* Find period that terminates command */
cmdend = strrchr(line, '.');
if (cmdend == NULL){
diagnostics(ERROR, "Bad config file, missing final period\nBad line is \"%s\"", line);
exit(1);
}
/* Replace period with NULL */
*cmdend = '\0';
/* Skip backslash if specified */
if (do_remove_backslash) {
if (*line != '\\')
diagnostics(ERROR, "Bad config file, missing initial'\\'\nBad line is\"%s\"", line);
else
line++;
}
/* resize buffer if needed */
if (bufindex >= bufsize) {
bufsize += BUFFER_INCREMENT;
*pointer_array = (struct ConfigEntryT **) realloc(*pointer_array, bufsize * sizeof(char *));
if (*pointer_array == NULL)
diagnostics(ERROR, "Cannot allocate memory for pointer list");
}
/* find start of definition */
line = strdup(line);
cmdend = strchr(line, ',');
if (cmdend == NULL) {
diagnostics(ERROR, "Bad config file, missing ',' between elements\nBad line is\"%s\"", line);
exit(1);
}
/* terminate command */
*cmdend = '\0';
(*pointer_array)[bufindex] = (struct ConfigEntryT *) malloc(sizeof(ConfigEntryT));
if ((*pointer_array)[bufindex] == NULL)
diagnostics(ERROR, "Cannot allocate memory for config entry");
(*pointer_array)[bufindex]->TexCommand = line;
(*pointer_array)[bufindex]->RtfCommand = cmdend + 1;
(*pointer_array)[bufindex]->original_id = bufindex;
bufindex++;
diagnostics(6,"%3d Tex='%s' RTF='%s'", bufindex, line, cmdend+1);
}
qsort(*pointer_array, bufindex, sizeof(**pointer_array), (fptr) cfg_compare);
return bufindex;
}
void ReadCfg(void)
/****************************************************************************
* purpose: opens config-files & reads them
* globals: Direct-, Font- IgnoreArray[Size/Root]
****************************************************************************/
{
int i;
FILE *fp;
char *fname;
for (i = 0; i < CONFIG_SIZE; i++) {
fname = configinfo[i].filename;
fp = (FILE *) open_cfg(fname, TRUE);
configinfo[i].config_info_size = read_cfg(fp, &(configinfo[i].config_info)
, configinfo[i].remove_leading_backslash);
(void) fclose(fp);
diagnostics(2, "read %d entries for file %s", configinfo[i].config_info_size, fname);
}
}
ConfigEntryT **SearchCfgEntry(const char *theTexCommand, int WhichCfg)
/****************************************************************************
* purpose: search theTexCommand in specified config data and return
* pointer to the data
****************************************************************************/
{
ConfigEntryT compare_item;
ConfigEntryT *compare_ptr, **p, **base;
int size;
compare_item.TexCommand = theTexCommand;
compare_item.RtfCommand = "";
compare_item.original_id= 0;
compare_ptr = &compare_item;
size = configinfo[WhichCfg].config_info_size;
base = configinfo[WhichCfg].config_info;
if (theTexCommand == NULL) return NULL;
assert(WhichCfg >= 0 && WhichCfg < CONFIG_SIZE);
assert(configinfo[WhichCfg].config_info != NULL);
diagnostics(5, "seeking '%s' in %d of size %d ", theTexCommand, WhichCfg, size);
p = (ConfigEntryT **) bsearch(&compare_ptr, base, size, sizeof(compare_ptr), (fptr) cfg_compare);
if (p)
diagnostics(5, "seeking '%s' found '%s'", theTexCommand, (**p).TexCommand);
return p;
}
ConfigEntryT **SearchCfgEntryByID(const int id, int WhichCfg)
/****************************************************************************
* purpose: Get the entry with the given id
****************************************************************************/
{
int i, max;
ConfigEntryT ** entry;
max = configinfo[WhichCfg].config_info_size;
if (id > (int) max) return NULL;
/* now iterate through all the entries looking for the right one */
entry = (ConfigEntryT **) configinfo[WhichCfg].config_info;
for (i=0; i<max; i++) {
if ( id == (**entry).original_id ) return entry;
entry++;
}
/* not found, should not be reached */
return NULL;
}
char *SearchCfgRtf(const char *theTexCommand, int WhichCfg)
/****************************************************************************
* purpose: search theTexCommand in a specified config data and return
* pointer to the corresponding RTF string
****************************************************************************/
{
ConfigEntryT **p;
p = SearchCfgEntry(theTexCommand, WhichCfg);
if (p == NULL)
return NULL;
else
return (char *) (**p).RtfCommand;
}
ConfigEntryT **CfgStartIterate(void)
/****************************************************************************
* purpose: Start iterating of configuration data
****************************************************************************/
{
return NULL;
}
ConfigEntryT **CfgNext(int WhichCfg, ConfigEntryT ** last)
/****************************************************************************
* purpose: Get the next entry from specified configuration data
****************************************************************************/
{
if (last == NULL)
return (ConfigEntryT **) configinfo[WhichCfg].config_info;
last++;
if (last > (ConfigEntryT **) configinfo[WhichCfg].config_info + configinfo[WhichCfg].config_info_size - 1)
return NULL;
return last;
}
ConfigEntryT **CfgNextByInsertion(int WhichCfg, ConfigEntryT ** last)
/****************************************************************************
* purpose: Get the next entry from specified configuration data
****************************************************************************/
{
int next_id;
if (last == NULL)
next_id = 0;
else
next_id = (**last).original_id + 1;
return SearchCfgEntryByID(next_id, WhichCfg);
}
/****************************************************************************
* opens and reads the language configuration file named in lang
Opens language file & builds a search tree for the translation of
"Hardcoded" latex headings like "Part", "References", ...
The file format is:
LATEXTOKEN,Translation.
****************************************************************************/
void ReadLanguage(char *lang)
{
FILE *fp;
char *langfn;
if (lang == NULL) return;
langfn = strdup_together(lang, ".cfg");
fp = (FILE *) open_cfg(langfn, TRUE);
free(langfn);
if (fp == NULL) return;
configinfo[LANGUAGE_A].config_info_size
= read_cfg(fp, &(configinfo[LANGUAGE_A].config_info), configinfo[LANGUAGE_A].remove_leading_backslash);
(void) fclose(fp);
}
/****************************************************************************
purpose : returns a pointer to the Printout name of a Heading, since
this is read from a language file it provides translation
capability.
params : name, name of heading.
****************************************************************************/
void ConvertBabelName(char *name)
{
char *s = SearchCfgRtf(name, LANGUAGE_A);
if (s != NULL)
ConvertString(s);
}
char *GetBabelName(char *name)
{
char *s = NULL;
s = SearchCfgRtf(name, LANGUAGE_A);
return s;
}
static char *buffer = NULL;
static int bufsize = 0;
#define CR (char) 0x0d
#define LF (char) 0x0a
/*
* This function assumes there are no '\0' characters in the input.
* if there are any, they are ignored.
*/
char *ReadUptoMatch(FILE * infile, const char *scanchars)
{
int bufindex = 0;
int c;
if (feof(infile) != 0)
return NULL;
if (buffer == NULL) {
buffer = (char *) malloc(BUFFER_INCREMENT * sizeof(char));
if (buffer == NULL) {
diagnostics(ERROR, "Cannot allocate memory for input buffer");
exit(1);
}
bufsize = BUFFER_INCREMENT;
}
while ((c = getc(infile)) != EOF) {
if (c == CR || c == LF)
c = '\n';
if (strchr(scanchars, c))
break;
if (c == (int) '\0')
continue;
buffer[bufindex++] = (char) c;
if (bufindex >= bufsize) {
bufsize += BUFFER_INCREMENT;
buffer = (char *) realloc(buffer, bufsize);
if (buffer == NULL) {
diagnostics(ERROR, "Cannot allocate memory for input buffer");
exit(1);
}
}
}
buffer[bufindex] = '\0';
if (c != EOF)
ungetc(c, infile);
return buffer;
}
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