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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.

(cherry picked from commit 96d43a873a)

Conflicts:
	examples/cwebp.c
	examples/dwebp.c

Change-Id: Ie537f5aebd138925bf1a48289b6b5e261b3af2ca
This commit is contained in:
James Zern
2014-09-10 23:35:48 -07:00
parent b7d209a448
commit 40b3a618ec
7 changed files with 113 additions and 40 deletions
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9
examples/vwebp.c
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@@ -408,6 +408,7 @@ 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;
@@ -422,7 +423,8 @@ int main(int argc, char *argv[]) {
config->options.alpha_dithering_strength = 0;
#endif
} 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")) {
@@ -445,6 +447,11 @@ int main(int argc, char *argv[]) {
} else {
kParams.file_name = argv[c];
}
if (parse_error) {
Help();
return -1;
}
}
if (kParams.file_name == NULL) {