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|
/*--[explode.c]----------------------------------------------------------------
| Copyright (C) 2002, 2003 Dan A. Jackson
|
| This file is part of "clit" (Convert LIT).
|
| "clit" 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
| The GNU General Public License may also be available at the following
| URL: http://www.gnu.org/licenses/gpl.html
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include "clit.h"
#include "litlib.h"
#include "manifest.h"
#include "utils.h"
#ifdef _MSC_VER
#include <direct.h>
#define mkdir(x,y) _mkdir(x)
#define strncasecmp _strnicmp
#endif
/*
| Herein is the routines to handle "exploding" of .LIT files into their
| component pieces.
| Some features, most noteably parsing the "/manifest" and expanding the
| tag-compressed HTML are included in the library.
*/
extern int disable_directory_support;
manifest_type manifest;
extern char * writingFilename;
/* Leave off the newline intentionally */
const char * meta_string = "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>\n\
<!DOCTYPE package \n\
PUBLIC \"+//ISBN 0-9673008-1-9//DTD OEB 1.0.1 Package//EN\"\n\
\"http://openebook.org/dtds/oeb-1.0.1/oebpkg101.dtd\">";
const char * xhtml_string = "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>\n\
<!DOCTYPE html PUBLIC \n\
\"+//ISBN 0-9673008-1-9//DTD OEB 1.0.1 Document//EN\"\n\
\"http://openebook.org/dtds/oeb-1.0.1/oebdoc101.dtd\">";
int directory_flag = 0;
int create_placeholders(char * pathOutput,manifest_type * pManifest);
char * get_opf_name(char * pathOutput, char * litname);
int write_htmlish_file(lit_file * litfile, char *, char *, char *);
int write_raw_file(lit_file * litfile,char *pathInternal, char *pathExternal);
int create_full_path(char * pathStarting, char * pathFile);
int explode_lit(lit_file * litfile, char * litName, char * pathOutput)
{
char * pathOPF = NULL;
char * pathInternal = NULL;
char * path = NULL;
int status;
int stage, i;
status = lit_read_manifest(litfile, &manifest);
if (status) goto bad;
status = create_placeholders(pathOutput,&manifest);
if (status) goto bad;
pathOPF = get_opf_name(pathOutput,litName);
writingFilename = pathOPF;
status = write_htmlish_file(litfile, "/meta", pathOPF, NULL);
free(pathOPF); pathOPF = NULL;
writingFilename = NULL;
if (status) goto bad;
for (stage = 0; stage < NUM_MANIFEST_MAPS; stage++) {
name_mapping * map;
if (!manifest.mappings[stage]) continue;
map = manifest.mappings[stage];
for (i = 0; i < manifest.num_mappings[stage]; i++) {
path = strmerge(pathOutput,(char *)map->sOriginal,NULL);
if (!path) {
status = E_LIT_OUT_OF_MEMORY;
goto bad;
}
writingFilename = path;
show_information("Writing out \"%s\" as \"%s\" ...",
map->sInternal, map->sOriginal);
status = E_LIT_INTERNAL_ERROR;
switch (stage) {
case 0:
case 1:
pathInternal = NULL; /* Generated inside htmlish code */
status = write_htmlish_file(litfile,(char *)map->sInternal,
path,(char *)map->sOriginal);
break;
case 2:
case 3:
pathInternal = strmerge("/data/",(char *)map->sInternal,0);
if (!pathInternal) {
status = E_LIT_OUT_OF_MEMORY;
goto bad;
}
status = write_raw_file(litfile,pathInternal,path);
break;
}
if (status) {
if (status > 0) {
show_information("Wrote out \"%s\", but with errors.\n",
path);
}
if (status < 0) return -1;
}
else {
show_information("Successfully written to \"%s\".\n", path);
}
if (path) { free(path); path = NULL;}
if (pathInternal) { free(pathInternal); pathInternal = NULL; }
writingFilename = NULL;
map++;
}
}
return 0;
bad:
if (path) free(path);
if (pathOPF) free(pathOPF);
if (pathInternal) free(pathInternal);
return status;
}
/*
| Return the length (in "points" not characters!) that is common between all
| entries.
*/
int find_common_length(manifest_type * pManifest)
{
mapping_state state;
name_mapping * map;
U8 * sFirst;
int common_length;
mapping_init(&state, pManifest);
/**
* First, find the maximum number of characters that is common between
* _all_ original filenames. This will be 0 except for some rare cases.
*/
map = mapping_next(&state);
sFirst = NULL;
common_length = 0;
/* Common length is in UTF8 units */
if (map) {
sFirst = map->sOriginal;
common_length = utf8_strlen(sFirst);
}
while ((map = mapping_next(&state)) != NULL)
{
int new_common;
new_common = utf8_strmatch(sFirst, map->sOriginal);
if (new_common < common_length) common_length = new_common;
}
return common_length;
}
/*
| Create a single file from a name mapping,
| Creates directories as needed.
*/
U8 * create_file_path(U8 * pathOutput, U8 * pathFile)
{
U32 c;
int error, len, status;
utf8_iter iter;
U8 * sFiltered, * sDirname, * sTemp, * s, * p;
FILE * f;
sFiltered = sTemp = sDirname = NULL;
do {
sFiltered = strmerge(pathFile, NULL,NULL);
if (!sFiltered) return NULL;
sDirname = strmerge(pathFile, NULL,NULL);
if (!sDirname) return NULL;
error = 0;
/* Loop one..
* Filter
*/
utf8_start(&iter, pathFile);
s = sFiltered;
do {
c = utf8_next(&iter);
if (!c) {
*s = '\0';
}
/* Filter out things which wouldn't be in DOS filenames */
else if ((c < ' ')|| (c == '?')|| (c == '<')|| (c == '>')||
(c == '\"')|| (c == '*')|| (c == '|')|| (c == ';')||
(c ==0x7f) || (c == ':'))
{
/* By definition, this can't be UTF8! */
*(s++) = '_';
} else if ((c == '/') || (c == '\\')) {
/* Use common slash, This is differentated later */
*(s++) = '/';
} else {
len = utf8_store(s, &iter);
s += len;
}
} while (c);
s = sDirname;
utf8_start(&iter, sFiltered);
do {
p = utf8_next_token(&iter, '/', &len);
if (!len) break;
/* Skip dots. */
if ((utf8_strmatch(p,"..") == 2) ||
(utf8_strmatch(p,".") == 1)) {
continue;
}
memcpy(s, p, len);
s += len;
*s = '\0';
/* This isn't a directory, continue on to the file check */
if (utf8_peek(&iter) == 0) break;
sTemp = strmerge(pathOutput,sDirname, NULL);
if (!sTemp) { error = 9; break; }
directory_flag++;
if (disable_directory_support) {
/* Shouldn't be here, because the other check takes
* care of it. Just in case.... */
error = 11;
break;
}
status = mkdir(sTemp,0755);
if (status && (errno != EEXIST)) {
lit_error(ERR_LIBC,"WARNING: mkdir() failed for \"%s\".\n",
sTemp);
free(sTemp); sTemp = NULL;
error = 10;
break;
}
free(sTemp);
sTemp = NULL;
#ifdef _MSC_VER
*(s++) = '\\';
#else
*(s++) = '/';
#endif
} while (1);
free(sFiltered);
sFiltered = NULL;
/* If an error occurred, go on to the next (pathless) potential name */
if (error) break;
/* Str should now contain a full qualified path, try to make the
* file. */
f = NULL;
sTemp = strmerge(pathOutput, sDirname, NULL);
if (sTemp) {
f = fopen(sTemp, "r");
if (f) { error = 1; }
else {
f = fopen(sTemp,"w");
if (f) { fclose(f); error = 0; }
else { error = 2; }
}
} else { error = -1; break; }
} while (0);
if (sTemp) free(sTemp);
if (sFiltered) free(sFiltered);
if (error) { if (sDirname) free(sDirname); sDirname = NULL; }
return sDirname;
}
char * int2string(int num)
{
static char sNum[10];
char *sNumPtr;
int temp = abs(num);
sNumPtr = &sNum[sizeof(sNum)/sizeof(sNum[0]) - 1];
*(sNumPtr--) = '\0';
do {
*sNumPtr = '0' + (temp%10);
sNumPtr--;
temp /= 10;
} while (temp && (sNumPtr > sNum));
if (num < 0)
*sNumPtr = '-';
else
sNumPtr++;
return sNumPtr;
}
/*
| This routine is responsible for converting from the "original" names
| stored in the .LIT file into names on the local file system.
|
| To fix duplicates, this CREATES all the files as it goes along.
| It also permits recreating a directory tree.
|
| Steps:
| 1. Filter out the common portions.
| (Workaround for a buggy generator which stores the originals as:
| C:\Something\Else\Books\ISBN\index.html).
|
| 2. Starting at the unique portion, create the subdirectories
| Subdirectories aren't handled at the moment, due to relative pathing.
| Filter out backwards references.
|
| 3. Finally, create the file. if it exists, try some numbers.
|
| 4. If all the numbers are taken, start over with the Internal filename
|
*/
int create_placeholders(char * pathOutput,manifest_type * pManifest)
{
int units2skip;
mapping_state state;
name_mapping * map;
units2skip = find_common_length(pManifest);
/* For each entry, find the unique portion and start the games */
mapping_init(&state, pManifest);
while ((map = mapping_next(&state)) != NULL) {
int bytes, units, len, bytes_after_dot;
U8 *p, * slash, * dot;
U32 c;
/* Skip to the last slash */
if (disable_directory_support)
units2skip = 0x7FFFF;
slash = p = map->sOriginal;
bytes = strlen(p)+1;
units = 0;
while (units < units2skip) {
len = read_utf8_char(p, bytes, &c);
if ((!c) || (len <= 0)) break;
if ((c == '/') || (c == '\\')) slash = (p+len);
units++;
p += len;
}
p = dot = slash;
while (1) {
len = read_utf8_char(p, bytes, &c);
if ((!c) || (len <= 0)) break;
if (c == '.') dot = p;
units++;
p += len;
}
bytes_after_dot = p - dot;
if (!bytes_after_dot) { dot = NULL; }
/* Start at the previous slash or the beginning */
p = create_file_path(pathOutput, slash);
if (!p) {
U8 * s;
int count;
s = strmerge(map->sInternal, dot, NULL);
if (s)
p = create_file_path(pathOutput, s);
if (!p)
{
if (s) free(s);
for (count = 1; count < 1000; count++)
{
s = strmerge(map->sInternal, int2string(-count), dot);
if (s) {
p = create_file_path(pathOutput,s);
}
if (p) break;
}
if (count == 1000) {
lit_error(0, "Unable to create a DOS file for \"%s\". \n",
map->sInternal);
return -1;
}
}
}
if (p) {
free(map->sOriginal);
map->sOriginal = p;
}
}
return 0;
}
char * get_opf_name(char * pathOutput, char * litname)
{
int idx, len;
char * str;
idx = len = strlen(litname);
/* assume that litname is a valid LIT file */
while (idx) {
if ((litname[idx] == '/') ||
(litname[idx] == '\\') ||
(litname[idx] == ':')) {
idx++;
break;
}
idx--;
}
if (strncasecmp(&litname[len-4],".lit",4) == 0) {
str = strmerge(pathOutput,&litname[idx],NULL);
if (!str) return str;
strcpy(&str[strlen(str)-3], "opf");
return str;
}
return strmerge(pathOutput,&litname[idx],".opf");
}
int write_callback(void * v, U8 * pData, int nBytes)
{
FILE * f;
int r;
if (!v) {
f = stdout;
} else {
f = (FILE *)v;
}
r = fwrite(pData,1, nBytes,f);
if (r < 0) {
lit_error(ERR_W|ERR_LIBC,"fwrite of %d bytes failed!",nBytes);
}
return r;
}
int write_htmlish_file(lit_file * litfile, char * source_name,
char * pathExternal, char * pathOriginal)
{
U8 * p;
lit_atom_list * listAtoms;
int nbytes;
int status;
FILE * fOut;
char * pathInternal;
manifest_type * pmanifest, relative_manifest;
pmanifest = &manifest;
p = NULL;
fOut = NULL;
listAtoms = NULL;
pathInternal = NULL;
status = -1;
do {
if (pathOriginal != NULL)
{
pathInternal = strmerge("/data/",source_name, "/content");
}
else
{ /* the meta files, don't have the 3-piece string */
/* So, copy anyway - it only happens once */
pathInternal = strmerge(source_name, 0, 0 );
}
if (!pathInternal) { status = E_LIT_OUT_OF_MEMORY; break; }
if (pathOriginal)
{
listAtoms = lit_read_atoms(litfile, source_name);
}
status = lit_get_file(litfile,pathInternal,&p, &nbytes);
if (status) { break; }
if ((directory_flag) && pathOriginal && !disable_directory_support) {
status = make_relative_manifest(pathOriginal,&relative_manifest,
pmanifest);
if (status != 0) { status = -20; break;}
pmanifest = &relative_manifest;
}
fOut = fopen(pathExternal, "w");
if (!fOut) {
lit_error(ERR_LIBC|ERR_W,"fopen(%s) failed!", pathExternal);
status = -1;
break;
}
if (pathOriginal == NULL) {
status = write_callback((void *)fOut,(U8 *)meta_string,
strlen(meta_string));
if ((size_t)status != strlen(meta_string)) { status = -1; break; }
status = lit_reconstitute_html(p, 0, nbytes, 1, pmanifest,
listAtoms, write_callback, (void *)fOut);
}
else {
status = write_callback((void *)fOut,(U8 *)xhtml_string,
strlen(xhtml_string));
if ((size_t)status != strlen(xhtml_string)) { status = -1; break;}
status = lit_reconstitute_html(p, 0, nbytes, 0, pmanifest,
listAtoms, write_callback, (void *)fOut);
}
if ((status > 0) && (status != nbytes)) {
lit_error(ERR_R,
"Warning - Couldn't fully expand \"%s\", decoded %d out of %d.\n",
pathInternal, status, (int)nbytes);
status = 1;
}
else if (status < 0) {
lit_error(ERR_R,
"ERROR - Failure during tag expansion of \"%s\" Code: %d!\n", pathInternal,
status);
}
else status = 0;
} while (0);
if (fOut != NULL) fclose(fOut);
if (p) free(p);
if (pathInternal) free(pathInternal);
if (listAtoms) { lit_free_atoms(listAtoms); }
return status;
}
int write_raw_file(lit_file * litfile,char * pathInternal, char * pathExternal)
{
int status;
int nbytes;
U8 * p;
FILE * fOut;
status = lit_get_file(litfile,pathInternal,&p,&nbytes);
if (status) return status;
fOut = fopen(pathExternal, "wb");
if (!fOut) {
free(p);
lit_error(ERR_LIBC|ERR_W,"fopen(%s) failed!", pathExternal);
return -1;
}
status = fwrite(p,1, nbytes,fOut);
free(p); p = NULL;
if (status < 0) {
lit_error(ERR_W|ERR_LIBC,"Failed to write %d bytes.",nbytes);
return status;
}
if (status != nbytes) {
lit_error(ERR_W,"Partial write, wrote %d out of %d.",status,nbytes);
return -1;
}
fclose(fOut);
return 0;
}
|
