tgainfo.c
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上传日期:2013-06-12
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文件大小:4k
- /*
- Copyright (C) 2000 Marco Ziech (mmz@gmx.net)
- Copyright (C) 2000 Ross Combs (rocombs@cs.nmsu.edu)
- 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 "common/setup_before.h"
- #ifdef HAVE_STDDEF_H
- # include <stddef.h>
- #else
- # ifndef NULL
- # define NULL ((void *)0)
- # endif
- #endif
- #include <stdio.h>
- #ifdef STDC_HEADERS
- # include <stdlib.h>
- #endif
- #include "compat/exitstatus.h"
- #ifdef HAVE_STRING_H
- # include <string.h>
- #else
- # ifdef HAVE_STRINGS_H
- # include <strings.h>
- # endif
- #endif
- #include <errno.h>
- #include "compat/strerror.h"
- #include "tga.h"
- #include "fileio.h"
- #include "common/version.h"
- #include "common/setup_after.h"
- static void usage(char const * progname)
- {
- fprintf(stderr,
- "usage: %s [<options>] [--] [<TGA file>]n"
- " -h, --help, --usage show this information and exitn"
- " -v, --version print version number and exitn",progname);
-
- exit(STATUS_FAILURE);
- }
- extern int main(int argc, char * argv[])
- {
- char const * tgafile=NULL;
- FILE * fp;
- int a;
- int forcefile=0;
- char dash[]="-"; /* unique address used as flag */
-
- if (argc<1 || !argv || !argv[0])
- {
- fprintf(stderr,"bad argumentsn");
- return STATUS_FAILURE;
- }
-
- for (a=1; a<argc; a++)
- if (forcefile && !tgafile)
- tgafile = argv[a];
- else if (strcmp(argv[a],"-")==0 && !tgafile)
- tgafile = dash;
- else if (argv[a][0]!='-' && !tgafile)
- tgafile = argv[a];
- else if (forcefile || argv[a][0]!='-' || strcmp(argv[a],"-")==0)
- {
- fprintf(stderr,"%s: extra file argument "%s"n",argv[0],argv[a]);
- usage(argv[0]);
- }
- else if (strcmp(argv[a],"--")==0)
- forcefile = 1;
- else if (strcmp(argv[a],"-v")==0 || strcmp(argv[a],"--version")==0)
- {
- printf("version "PVPGN_VERSION"n");
- return STATUS_SUCCESS;
- }
- else if (strcmp(argv[a],"-h")==0 || strcmp(argv[a],"--help")==0 || strcmp(argv[a],"--usage")
- ==0)
- usage(argv[0]);
- else
- {
- fprintf(stderr,"%s: unknown option "%s"n",argv[0],argv[a]);
- usage(argv[0]);
- }
-
- if (!tgafile)
- tgafile = dash;
-
- if (tgafile==dash)
- fp = stdin;
- else
- if (!(fp = fopen(tgafile,"r")))
- {
- fprintf(stderr,"%s: could not open TGA file "%s" for reading (fopen: %s)n",argv[0],tgafile,strerror(errno));
- return STATUS_FAILURE;
- }
-
- {
- t_tgaimg * tgaimg;
-
- file_rpush(fp);
- if (!(tgaimg = load_tgaheader()))
- {
- fprintf(stderr,"%s: could not load TGA headern",argv[0]);
- if (tgafile!=dash && fclose(fp)<0)
- fprintf(stderr,"%s: could not close file "%s" after reading (fclose: %s)n",argv[0],tgafile,strerror(errno));
- return STATUS_FAILURE;
- }
- print_tga_info(tgaimg,stdout);
- file_rpop();
- }
-
- if (tgafile!=dash && fclose(fp)<0)
- fprintf(stderr,"%s: could not close file "%s" after reading (fclose: %s)n",argv[0],tgafile,strerror(errno));
- return STATUS_SUCCESS;
- }