quicktime/ffmpeg/cmdutils.c

   1 /*
   2  * Various utilities for command line tools
   3  * Copyright (c) 2000-2003 Fabrice Bellard
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19 #define HAVE_AV_CONFIG_H
  20 #include "avformat.h"
  21 #include "common.h"
  22
  23 #include "cmdutils.h"
  24
  25 void show_help_options(const OptionDef *options, const char *msg, int mask, int value)
  26 {
  27     const OptionDef *po;
  28     int first;
  29
  30     first = 1;
  31     for(po = options; po->name != NULL; po++) {
  32         char buf[64];
  33         if ((po->flags & mask) == value) {
  34             if (first) {
  35                 printf("%s", msg);
  36                 first = 0;
  37             }
  38             pstrcpy(buf, sizeof(buf), po->name);
  39             if (po->flags & HAS_ARG) {
  40                 pstrcat(buf, sizeof(buf), " ");
  41                 pstrcat(buf, sizeof(buf), po->argname);
  42             }
  43             printf("-%-17s  %s\n", buf, po->help);
  44         }
  45     }
  46 }
  47
  48 void parse_options(int argc, char **argv, const OptionDef *options)
  49 {
  50     const char *opt, *arg;
  51     int optindex;
  52     const OptionDef *po;
  53
  54     /* parse options */
  55     optindex = 1;
  56     while (optindex < argc) {
  57         opt = argv[optindex++];
  58
  59         if (opt[0] == '-' && opt[1] != '\0') {
  60             po = options;
  61             while (po->name != NULL) {
  62                 if (!strcmp(opt + 1, po->name))
  63                     break;
  64                 po++;
  65             }
  66             if (!po->name) {
  67                 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
  68                 exit(1);
  69             }
  70             arg = NULL;
  71             if (po->flags & HAS_ARG) {
  72                 arg = argv[optindex++];
  73                 if (!arg) {
  74                     fprintf(stderr, "%s: missing argument for option '%s'\n", argv[0], opt);
  75                     exit(1);
  76                 }
  77             }
  78             if (po->flags & OPT_STRING) {
  79                 char *str;
  80                 str = av_strdup(arg);
  81                 *po->u.str_arg = str;
  82             } else if (po->flags & OPT_BOOL) {
  83                 *po->u.int_arg = 1;
  84             } else if (po->flags & OPT_INT) {
  85                 *po->u.int_arg = atoi(arg);
  86             } else if (po->flags & OPT_FLOAT) {
  87                 *po->u.float_arg = atof(arg);
  88             } else {
  89                 po->u.func_arg(arg);
  90             }
  91         } else {
  92             parse_arg_file(opt);
  93         }
  94     }
  95 }
  96
  97 void print_error(const char *filename, int err)
  98 {
  99     switch(err) {
 100     case AVERROR_NUMEXPECTED:
 101         fprintf(stderr, "%s: Incorrect image filename syntax.\n"
 102                 "Use '%%d' to specify the image number:\n"
 103                 "  for img1.jpg, img2.jpg, ..., use 'img%%d.jpg';\n"
 104                 "  for img001.jpg, img002.jpg, ..., use 'img%%03d.jpg'.\n",
 105                 filename);
 106         break;
 107     case AVERROR_INVALIDDATA:
 108         fprintf(stderr, "%s: Error while parsing header\n", filename);
 109         break;
 110     case AVERROR_NOFMT:
 111         fprintf(stderr, "%s: Unknown format\n", filename);
 112         break;
 113     case AVERROR_IO:
 114         fprintf(stderr, "%s: I/O error occured\n"
 115                 "Usually that means that input file is truncated and/or corrupted.\n",
 116                 filename);
 117         break;
 118     case AVERROR_NOMEM:
 119         fprintf(stderr, "%s: memory allocation error occured\n", filename);
 120         break;
 121     default:
 122         fprintf(stderr, "%s: Error while opening file\n", filename);
 123         break;
 124     }
 125 }