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More reliable way to determine if disk image has a .po file extension

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tudnai 2020-07-31 14:19:31 -07:00
parent bd764cf909
commit 8e6617bcee
1 changed files with 4 additions and 10 deletions
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12
src/dev/disk/dsk2woz.c
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@ -65,15 +65,9 @@ int dsk2woz( const char * filename ) {
fclose(dsk_file); fclose(dsk_file);
// Determine from the filename whether to use Pro-DOS sector order. // Determine from the filename whether to use Pro-DOS sector order.
bool has_p = false; const char *extension = filename + strlen(filename) - 3;
bool has_dot = false; // for some reason macos does not have stricmp, so we do it in a not-so-efficient way
const char *extension = filename + strlen(filename); const bool is_prodos = (strcmp(extension, ".po") == 0) || (strcmp(extension, ".PO") == 0);
do {
has_p = *extension == 'p';
has_dot = *extension == '.';
--extension;
} while(extension > filename && *extension != '/' && *extension != '.');
const bool is_prodos = has_p && has_dot;
// If the DSK image was too short, announce failure. Some DSK files // If the DSK image was too short, announce failure. Some DSK files
// seem empirically to be too long, but it's unclear that the extra // seem empirically to be too long, but it's unclear that the extra