+/* swfbytes.c
+ A tool for modifying swf files
+
+ Part of the swftools package.
+
+ Copyright (c) 2008/2009 Matthias Kramm <kramm@quiss.org>
+
+ 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
+
+#include "../config.h"
+#include <unistd.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include "../lib/rfxswf.h"
+#include "../lib/args.h"
+
+static char * filename = 0;
+static int verbose;
+
+struct options_t options[] =
+{
+ {"v","verbose"},
+ {"V","version"},
+ {0,0}
+};
+
+int args_callback_option(char*name,char*val)
+{
+ if(!strcmp(name, "V")) {
+ printf("swfedit - part of %s %s\n", PACKAGE, VERSION);
+ return 0;
+ } else if(!strcmp(name, "v")) {
+ verbose++;
+ return 0;
+ } else {
+ printf("Unknown option: -%s\n", name);
+ return 0;
+ }
+ return 0;
+}
+int args_callback_longoption(char*name,char*val)
+{
+ return args_long2shortoption(options, name, val);
+}
+void args_callback_usage(char*name)
+{
+ printf("Usage: %s [-at] file.swf\n", name);
+ printf("\t-h , --help\t\t Print help and exit\n");
+ printf("\t-v , --verbose\t\t Be more verbose\n");
+ printf("\t-V , --version\t\t Print program version and exit\n");
+}
+int args_callback_command(char*name,char*val)
+{
+ if(filename) {
+ fprintf(stderr, "Only one file allowed. You supplied at least two. (%s and %s)\n", filename, name);
+ }
+ filename = name;
+ return 0;
+}
+
+void dumpTag(FILE*fo, char*prefix, TAG*tag)
+{
+ int t;
+ for(t=0;t<tag->len;t++) {
+ if(!(t&15))
+ fprintf(fo, "%s| ", prefix);
+ fprintf(fo, "%02x ", tag->data[t]);
+ if((t && ((t&15)==15)) || (t==tag->len-1)) {
+ fprintf(fo, "\n");
+ }
+ }
+}
+
+void dumpFile(SWF*swf, FILE*fo)
+{
+ TAG* tag = swf->firstTag;
+ int indent = 0;
+ int t;
+ char whitespace[33];
+ char*prefix = "";
+
+ memset(whitespace, 32, 32); whitespace[32] = 0;
+
+ fprintf(fo, "Version: %d\n", swf->fileVersion);
+ fprintf(fo, "FrameRate: %f\n",swf->frameRate/256.0);
+ fprintf(fo, "FrameCount: %d\n",swf->frameCount);
+ fprintf(fo, "Width: %.2f\n",(swf->movieSize.xmax-swf->movieSize.xmin)/20.0);
+ fprintf(fo, "X-Offset: %.2f\n", swf->movieSize.xmin/20.0);
+ fprintf(fo, "Height: %.2f\n",(swf->movieSize.ymax-swf->movieSize.ymin)/20.0);
+ fprintf(fo, "Y-Offset: %.2f\n", swf->movieSize.ymin/20.0);
+ fprintf(fo, "\n");
+
+ while(tag)
+ {
+ if(swf_isDefiningTag(tag)) {
+ fprintf(fo, "%s%s <%d>\n", prefix, swf_TagGetName(tag), swf_GetDefineID(tag));
+ swf_SetTagPos(tag, 2);
+ dumpTag(fo, prefix, tag);
+ } else if(swf_isPseudoDefiningTag(tag)) {
+ fprintf(fo, "%s%s <%d>\n", prefix, swf_TagGetName(tag), swf_GetDefineID(tag));
+ swf_SetTagPos(tag, 2);
+ dumpTag(fo, prefix, tag);
+ } else if(tag->id == ST_PLACEOBJECT || tag->id == ST_PLACEOBJECT2) {
+ SWFPLACEOBJECT po;
+ swf_GetPlaceObject(tag, &po);
+ fprintf(fo, "%s%s <%d>\n", prefix,swf_TagGetName(tag), po.id);
+ /* for now */
+ swf_SetTagPos(tag, 0);
+ dumpTag(fo, prefix, tag);
+ swf_PlaceObjectFree(&po);
+ } else {
+ fprintf(fo, "%s%s\n", prefix, swf_TagGetName(tag));
+ dumpTag(fo, prefix, tag);
+ }
+
+ if(tag->id == ST_DEFINESPRITE) {
+ indent+=4;
+ if(indent>32)
+ indent = 32;
+ prefix = &whitespace[32-indent];
+ } else if(tag->id == ST_END) {
+ indent-=4;
+ if(indent<0)
+ indent = 0;
+ prefix = &whitespace[32-indent];
+ }
+
+ tag = tag->next;
+ }
+}
+
+static void readline(FILE*fi, char*line, int maxlen) {
+ int pos = 0;
+ while(!feof(fi)) {
+ if(!fread(&line[pos],1,1,fi))
+ break;
+
+ /* cut of preceding whitespace */
+ if(pos == 0 && (line[0] == 32 || line[0] == '\t'))
+ continue;
+
+ if(line[pos] == 13 || line[pos]==10)
+ break;
+ if(pos<maxlen-1)
+ pos++;
+ }
+ line[pos]=0;
+
+ /* cut off comments */
+ char*x=strchr(line,'#');
+ if(x) {
+ *x=0;
+ pos = x-line;
+ }
+
+ /* cut off trailing whitespace */
+ while(pos>=1 && (line[pos-1]==32 || line[pos-1]==9)) {
+ pos--;
+ line[pos]=0;
+ }
+}
+
+int getFloat(char*s)
+{
+ float x;
+ int n;
+ while(*s==32 || *s=='\t') s++;
+ sscanf(s, "%f%n", &x, &n);
+ if(n==0)
+ fprintf(stderr, "Not a float: %s\n", s);
+ return x;
+}
+int getInt(char*s)
+{
+ int i;
+ int n;
+ while(*s==32 || *s=='\t') s++;
+ sscanf(s, "%d%n", &i, &n);
+ if(n==0)
+ fprintf(stderr, "Not an integer: %s\n", s);
+ return i;
+}
+int getTwip(char*x)
+{
+ return (int)(getFloat(x)*20);
+}
+
+
+static char**lookup;
+int swf_TagNameToID(char*name)
+{
+ int t;
+ TAG tag;
+ memset(&tag, 0, sizeof(tag));
+ if(!lookup) {
+ lookup = (char**)malloc(sizeof(char*)*65536);
+ for(t=0;t<65536;t++) {
+ tag.id = t;
+ lookup[t] = swf_TagGetName(&tag);
+ }
+ }
+ for(t=0;t<65536;t++) {
+ if(lookup[t] && !strcasecmp(name, lookup[t]))
+ return t;
+ }
+ fprintf(stderr, "Not a tag name: \"%s\"\n", name);
+ return -1;
+}
+
+void parseFile(FILE*fi, SWF*swf)
+{
+ TAG*tag = 0;
+ char line[1024];
+ memset(swf, 0, sizeof(SWF));
+ while(1) {
+ char*colon = 0;
+ readline(fi, line, 1024);
+ if(!line[0])
+ break;
+ colon = strchr(line, ':');
+ if(colon) {
+ int num = colon - line;
+ int n;
+ if(num == 9 && !strncmp(line, "FrameRate", num)) {
+ swf->frameRate = getFloat(colon+1)*256;
+ } else if(num == 10 && !strncmp(line, "FrameCount", num)) {
+ swf->frameCount = getInt(colon+1);
+ } else if(num == 7 && !strncmp(line, "Version", num)) {
+ swf->fileVersion = getInt(colon+1);
+ } else if(num == 5 && !strncmp(line, "Width", num)) {
+ int width = getTwip(colon+1);
+ swf->movieSize.xmax += width;
+ } else if(num == 6 && !strncmp(line, "Height", num)) {
+ int height = getTwip(colon+1);
+ swf->movieSize.ymax += height;
+ } else if(num == 8 && !strncmp(line, "X-Offset", num)) {
+ int xoffset = getTwip(colon+1);
+ swf->movieSize.xmin += xoffset;
+ swf->movieSize.xmax += xoffset;
+ } else if(num == 8 && !strncmp(line, "Y-Offset", num)) {
+ int yoffset = getTwip(colon+1);
+ swf->movieSize.ymin += yoffset;
+ swf->movieSize.ymax += yoffset;
+ } else {
+ fprintf(stderr, "Ignored line \"%s\"\n", line);
+ }
+ }
+ }
+ while(!feof(fi)) {
+ char*s, *tagname;
+ char*br;
+ readline(fi, line, 1024);
+ if(!line[0])
+ continue;
+ s = strchr(line, ' ');
+ br = strchr(line, '|');
+ if(!br) {
+ int id = 0;
+ /* DEFINESHAPE <id> ... type line */
+ if(!s) {
+ tagname = strdup(line);
+ } else {
+ tagname = strdup(line);
+ tagname[s-line] = 0;
+ }
+ id = swf_TagNameToID(tagname);
+ free(tagname);
+ if(id<0) {
+ fprintf(stderr, "Ignored line \"%s\"\n", line);
+ continue;
+ }
+ tag = swf_InsertTag(tag, id);
+ if(!swf->firstTag)
+ swf->firstTag = tag;
+ } else {
+ /* | 00 34 fe c7 ... type line */
+ char*p = line;
+ int num = 0;
+ int digits = 0;
+
+ if(!tag) {
+ fprintf(stderr, "Discarded unassignable data %s\n", line);
+ continue;
+ }
+
+ while(*p) {
+ int n = 0;
+ if((*p>='a' && *p<='f') ||
+ (*p>='A' && *p<='F')) {
+ n = 9 + (*p & 15);
+ num = (num<<4) | n;
+ digits++;
+ }
+ else if(*p>='0' && *p<='9') {
+ n = *p & 15;
+ num = (num<<4) | n;
+ digits++;
+ } else if(digits) {
+ swf_SetU8(tag, num);
+ num = 0;
+ digits = 0;
+ }
+ p++;
+ }
+ if(digits)
+ swf_SetU8(tag, num);
+ }
+ }
+}
+
+char swf_IsSWF(char*filename)
+{
+ int fi = open(filename,O_RDONLY|O_BINARY);
+ U8 buf[3] = {0,0,0};
+ if(fi<0)
+ return 0;
+ read(fi, buf, 3);
+ close(fi);
+ if((buf[0] == 'F' || buf[0] == 'C') && buf[1] == 'W' && buf[2] == 'S')
+ return 1;
+ return 0;
+}
+
+int main (int argc,char ** argv)
+{
+ int fi;
+ TAG*tag = 0;
+ SWF swf;
+
+ processargs(argc, argv);
+
+ if(!filename) {
+ fprintf(stderr, "You must supply a filename.\n");
+ return -1;
+ }
+ if(swf_IsSWF(filename)) {
+ fi = open(filename,O_RDONLY|O_BINARY);
+ if (fi<0) {
+ perror("Couldn't open file: ");
+ exit(1);
+ }
+ if FAILED(swf_ReadSWF(fi,&swf)) {
+ fprintf(stderr, "%s is not a valid SWF file or contains errors.\n",filename);
+ close(fi);
+ exit(1);
+ }
+ dumpFile(&swf, stdout);
+ swf_FreeTags(&swf);
+ } else {
+ SWF newswf;
+ FILE*fi = fopen(filename, "rb");
+ parseFile(fi, &newswf);
+ fclose(fi);
+ int f;
+ char*sname = "output.swf";
+ f = open(sname,O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0644);
+ if FAILED(swf_WriteSWF(f,&newswf)) {
+ fprintf(stderr, "Unable to write output file: %s\n", sname);
+ }
+ close(f);
+ }
+
+ return 0;
+}
+
git.asbjorn.biz / swftools.git / commitdiff