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/*
* Copyright 2006 Nick White
*
* This mediagz is part of GetHT
*
* GetHT 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.
*
* GetHT 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 GetHT; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <stdio.h>
#include <string.h>
#include <zlib.h>
#include "getht.h"
#include "issue.h"
int gzgetstr(char * newstr, gzFile * gzfile);
int getquote(char * input, char * quote, int number);
int strcontains(char * source, char * comparison);
med ** parsemediagz(char * media_path, int * no_of_media)
/* Parses gzipped adobe pagemaker files for media urls and metadata,
* filling media with the information. */
{
char c;
char cur_line[STR_MAX];
gzFile mediagz;
*no_of_media = -1;
med ** media = NULL;
strcpy(cur_line,""); /* reset cur_line */
mediagz = gzopen(media_path, "r");
med * cur_media;
while(gzeof(mediagz)==0)
{
gzgetstr(cur_line, mediagz);
if(strcontains(cur_line,"on mouseUp") == 0)
{
/* assign memory for the new media */
media = assignnew_med(media, no_of_media);
cur_media = media[*no_of_media];
/* setup media globals */
cur_media->uri[0] = '\0';
cur_media->title[0] = '\0';
cur_media->comment[0] = '\0';
cur_media->preview_uri[0] = '\0';
cur_media->size = 0;
/* process rev file */
while(strcontains(cur_line,"end mouseUp") && gzeof(mediagz)==0)
{
strcpy(cur_line,""); /* reset cur_line */
gzgetstr(cur_line, mediagz);
if(!strcontains(cur_line,"set the filename of player \"") && strcontains(cur_line,"empty"))
getquote(cur_line, cur_media->uri, 2);
else if(!strcontains(cur_line,"set the label of this stack to"))
getquote(cur_line, cur_media->title, 1);
else if(!strcontains(cur_line,"statusMsg\(\"") || !strcontains(cur_line,"StatusMsg \(\""))
getquote(cur_line, cur_media->comment, 1);
}
/* if it turns out that there was nothing useful there, remove the new media */
if(cur_media->uri[0] == '\0')
(*no_of_media)--;
}
strcpy(cur_line,""); /* reset cur_line */
}
return media;
}
int getquote(char * input, char * quote, int number)
/* assigns quote string from a line of the format:
* 'something "quote" something' */
{
int curnum;
/* advance past earlier quotes */
for(curnum=0; curnum < ((number*2)-2); curnum++)
{
/* advance until " character is reached */
while(*input != '"' && *input)
input++;
input++;
}
/* advance until " character is reached */
while(*input != '"' && *input)
input++;
input++;
/* copy characters in until next '"' */
while(*input != '"')
{
/* if end is found without closing bracket,
* exit with error */
if(! *input)
return 1;
*quote = *input;
quote++;
input++;
}
*quote = '\0';
return 0;
}
int strcontains(char * source, char * comparison)
{
int srcpos = 0; /* position in source string */
int compos = 0; /* position in comparison string */
while(srcpos < strlen(source) && srcpos < STR_MAX)
{
/* if the chars match, move to the next in comparison,
* otherwise only advance the source */
if(source[srcpos] == comparison[compos])
compos++;
else
compos = 0;
/* if we got to the end of comparison, there's a match */
if(compos == strlen(comparison))
return 0;
srcpos++;
}
/* if we got all the way through the source, there's no match */
return 1;
}
int gzgetstr(char * newstr, gzFile * gzfile)
/* a reimplementation of gzgetstr, which doesn't choke at odd characters
*/
{
strcpy(newstr,""); /* reset cur_line */
char c;
while((c = gzgetc(gzfile)) != -1)
{
if(c == '\n')
break;
/* append the char if there's room in the str */
if(strlen(newstr)+1 < STR_MAX)
strncat(newstr,&c,1);
/* if the line is too long just break to pick up the 2nd half on next pass,
* not perfect (will miss strs cut into 2 sections), but good enough for now */
else
break;
}
return 0;
}
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