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Fix env parsing code 

Also changed the separator to comma instead of colon.
This commit is contained in:
Behdad Esfahbod 2011-08-05 17:54:25 -04:00
parent 3931837beb
commit c4d63ef744
1 changed files with 25 additions and 9 deletions
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34
src/hb-shape.cc
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@ -62,28 +62,44 @@ static const struct hb_shaper_pair_t {
static class static_shaper_list_t {
public:
static_shaper_list_t (void) {
static_shaper_list_t (void)
{
char *env = getenv ("HB_SHAPER_LIST");
shaper_list = NULL;
if (!env || !*env)
return;
unsigned int count = 3; /* initial, fallback, null */
for (const char *p = env; (p == strchr (p, ':')) && p++; )
for (const char *p = env; (p == strchr (p, ',')) && p++; )
count++;
if (count <= ARRAY_LENGTH (static_shaper_list))
shaper_list = static_shaper_list;
else
shaper_list = (const char **) malloc (count * sizeof (shaper_list[0]));
unsigned int len = strlen (env);
if (count > 100 || len > 1000)
return;
len += count * sizeof (*shaper_list) + 1;
char *buffer = len < sizeof (static_buffer) ? static_buffer : (char *) malloc (len);
shaper_list = (const char **) buffer;
buffer += count * sizeof (*shaper_list);
len -= count * sizeof (*shaper_list);
strncpy (buffer, env, len);
count = 0;
shaper_list[count++] = env;
for (char *p = env; (p == strchr (p, ':')) && (*p = '\0', TRUE) && p++; )
shaper_list[count++] = buffer;
for (char *p = buffer; (p == strchr (p, ',')) && (*p = '\0', TRUE) && p++; )
shaper_list[count++] = p;
shaper_list[count++] = "fallback";
shaper_list[count] = NULL;
}
~static_shaper_list_t (void)
{
if ((char *) shaper_list != static_buffer)
free (shaper_list);
}
const char **shaper_list;
const char *static_shaper_list[10];
char static_buffer[32];
} env_shaper_list;
hb_bool_t