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examples: warn on invalid numeric parameters

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add ExUtilGet[U]Int / ExUtilGetFloat which print an error message on
parse failure.
fixes issue #219.

Change-Id: Ie537f5aebd138925bf1a48289b6b5e261b3af2ca
This commit is contained in:
James Zern
2014-09-10 23:35:48 -07:00
parent be70b86c57
commit 96d43a873a
7 changed files with 114 additions and 41 deletions
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9
examples/vwebp.c
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@ -404,6 +404,7 @@ int main(int argc, char *argv[]) {
kParams.use_color_profile = 1;
for (c = 1; c < argc; ++c) {
int parse_error = 0;
if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
Help();
return 0;
@ -416,7 +417,8 @@ int main(int argc, char *argv[]) {
} else if (!strcmp(argv[c], "-noalphadither")) {
config->options.alpha_dithering_strength = 0;
} else if (!strcmp(argv[c], "-dither") && c + 1 < argc) {
config->options.dithering_strength = strtol(argv[++c], NULL, 0);
config->options.dithering_strength =
ExUtilGetInt(argv[++c], 0, &parse_error);
} else if (!strcmp(argv[c], "-info")) {
kParams.print_info = 1;
} else if (!strcmp(argv[c], "-version")) {
@ -439,6 +441,11 @@ int main(int argc, char *argv[]) {
} else {
kParams.file_name = argv[c];
}
if (parse_error) {
Help();
return -1;
}
}
if (kParams.file_name == NULL) {