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improve command-line parsing, fix crash with -fn without argument

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Print the usage information instead of silently continuing.
On an invalid argument print the invalid argument and usage.
This commit is contained in:
Hiltjo Posthuma 2021-03-28 15:05:56 +02:00
parent 55de8b5184
commit d6026943d3
1 changed files with 8 additions and 7 deletions
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15
svkbd.c
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@ -1151,12 +1151,11 @@ main(int argc, char *argv[])
die("svkbd-"VERSION);
} else if (!strcmp(argv[i], "-d")) {
isdock = True;
continue;
} else if (!strncmp(argv[i], "-g", 2)) {
if (i >= argc - 1)
continue;
usage(argv[0]);
bitm = XParseGeometry(argv[i + 1], &xr, &yr, &wr, &hr);
bitm = XParseGeometry(argv[++i], &xr, &yr, &wr, &hr);
if (bitm & XValue)
wx = xr;
if (bitm & YValue)
@ -1169,8 +1168,9 @@ main(int argc, char *argv[])
wx = -1;
if (bitm & YNegative && wy == 0)
wy = -1;
i++;
} else if (!strcmp(argv[i], "-fn")) { /* font or font set */
if (i >= argc - 1)
usage(argv[0]);
fonts[0] = estrdup(argv[++i]);
} else if (!strcmp(argv[i], "-D")) {
debug = 1;
@ -1186,19 +1186,20 @@ main(int argc, char *argv[])
pressonrelease = 0;
} else if (!strcmp(argv[i], "-l")) {
if (i >= argc - 1)
continue;
usage(argv[0]);
free(layer_names_list);
layer_names_list = estrdup(argv[++i]);
} else if (!strcmp(argv[i], "-s")) {
if (i >= argc - 1)
continue;
usage(argv[0]);
initial_layer_name = argv[++i];
} else if (!strcmp(argv[i], "-H")) {
if (i >= argc - 1)
continue;
usage(argv[0]);
heightfactor = atoi(argv[++i]);
} else {
fprintf(stderr, "Invalid argument: %s\n", argv[i]);
usage(argv[0]);
exit(2);
}
}