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Added utility function and stubs

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Justin Ethier 2017-10-24 17:53:43 -04:00
parent 6c4dd4b740
commit 13e260300f
2 changed files with 11 additions and 0 deletions
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1
include/cyclone/runtime.h
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@ -719,6 +719,7 @@ uint32_t Cyc_utf8_decode(uint32_t* state, uint32_t* codep, uint32_t byte);
int Cyc_utf8_count_code_points(uint8_t* s);
uint32_t Cyc_utf8_validate_stream(uint32_t *state, char *str, size_t len);
uint32_t Cyc_utf8_validate(char *str, size_t len);
int uint32_num_bytes(uint32_t val);
/**@}*/
#endif /* CYCLONE_RUNTIME_H */

10
runtime.c
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@ -178,6 +178,7 @@ void pack_env_variables(void *data, object k)
svar->hdr.grayed = 0;
svar->tag = string_tag;
svar->len = eqpos - e;
svar->num_cp = svar->len; // TODO: proper UTF-8 support!
svar->str = alloca(sizeof(char) * (svar->len));
strncpy(svar->str, e, svar->len);
(svar->str)[svar->len] = '\0';
@ -189,6 +190,7 @@ void pack_env_variables(void *data, object k)
sval->hdr.grayed = 0;
sval->tag = string_tag;
sval->len = strlen(eqpos);
sval->num_cp = sval->len; // TODO: proper UTF-8 support!
sval->str = eqpos;
set_pair(tmp, svar, sval);
set_pair(p, tmp, NULL);
@ -6553,4 +6555,12 @@ uint32_t Cyc_utf8_validate(char *str, size_t len) {
return state;
}
int uint32_num_bytes(uint32_t x) {
// TODO: could compute log(val) / log(256)
if (x < 0x100) return 1;
if (x < 0x10000) return 2;
if (x < 0x1000000) return 3;
return 4;
}
////////////// END UTF-8 Section //////////////