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normalize example exit status

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Use EXIT_SUCCESS / EXIT_FAILURE in most cases as more granularity isn't
useful. For anim_diff, use 0 (success), 1 (image difference) and 2
(error) to align it with other diff utilities (diff, etc.).

Bug: webp:637
Change-Id: I52925de8622a5a4d2141883279d69a1d95ef9b12
This commit is contained in:
James Zern
2024-04-30 18:18:23 -07:00
parent edc289092a
commit a67ff735a2
19 changed files with 139 additions and 72 deletions
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19
examples/gif2webp.c
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@ -96,6 +96,7 @@ static void Help(void) {
//------------------------------------------------------------------------------
// Returns EXIT_SUCCESS on success, EXIT_FAILURE on failure.
int main(int argc, const char* argv[]) {
int verbose = 0;
int gif_error = GIF_ERROR;
@ -140,7 +141,7 @@ int main(int argc, const char* argv[]) {
!WebPPictureInit(&frame) || !WebPPictureInit(&curr_canvas) ||
!WebPPictureInit(&prev_canvas)) {
fprintf(stderr, "Error! Version mismatch!\n");
FREE_WARGV_AND_RETURN(-1);
FREE_WARGV_AND_RETURN(EXIT_FAILURE);
}
config.lossless = 1; // Use lossless compression by default.
@ -150,14 +151,14 @@ int main(int argc, const char* argv[]) {
if (argc == 1) {
Help();
FREE_WARGV_AND_RETURN(0);
FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
}
for (c = 1; c < argc; ++c) {
int parse_error = 0;
if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
Help();
FREE_WARGV_AND_RETURN(0);
FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
} else if (!strcmp(argv[c], "-o") && c < argc - 1) {
out_file = GET_WARGV(argv, ++c);
} else if (!strcmp(argv[c], "-lossy")) {
@ -216,7 +217,7 @@ int main(int argc, const char* argv[]) {
fprintf(stderr, "Error! Unknown metadata type '%.*s'\n",
(int)(token - start), start);
Help();
FREE_WARGV_AND_RETURN(-1);
FREE_WARGV_AND_RETURN(EXIT_FAILURE);
}
start = token + 1;
}
@ -229,7 +230,7 @@ int main(int argc, const char* argv[]) {
(enc_version >> 16) & 0xff, (enc_version >> 8) & 0xff,
enc_version & 0xff, (mux_version >> 16) & 0xff,
(mux_version >> 8) & 0xff, mux_version & 0xff);
FREE_WARGV_AND_RETURN(0);
FREE_WARGV_AND_RETURN(EXIT_SUCCESS);
} else if (!strcmp(argv[c], "-quiet")) {
quiet = 1;
enc_options.verbose = 0;
@ -242,14 +243,14 @@ int main(int argc, const char* argv[]) {
} else if (argv[c][0] == '-') {
fprintf(stderr, "Error! Unknown option '%s'\n", argv[c]);
Help();
FREE_WARGV_AND_RETURN(-1);
FREE_WARGV_AND_RETURN(EXIT_FAILURE);
} else {
in_file = GET_WARGV(argv, c);
}
if (parse_error) {
Help();
FREE_WARGV_AND_RETURN(-1);
FREE_WARGV_AND_RETURN(EXIT_FAILURE);
}
}
@ -593,7 +594,7 @@ int main(int argc, const char* argv[]) {
#endif
}
FREE_WARGV_AND_RETURN(!ok);
FREE_WARGV_AND_RETURN(ok ? EXIT_SUCCESS : EXIT_FAILURE);
}
#else // !WEBP_HAVE_GIF
@ -601,7 +602,7 @@ int main(int argc, const char* argv[]) {
int main(int argc, const char* argv[]) {
fprintf(stderr, "GIF support not enabled in %s.\n", argv[0]);
(void)argc;
return 0;
return EXIT_FAILURE;
}
#endif