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Backport from xs.

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default 2024-02-15 17:44:28 +01:00
parent 263e239653
commit b75e44afb3
3 changed files with 22 additions and 25 deletions
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35
xs.h
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@ -54,6 +54,7 @@ void _xs_destroy(char **var);
xstype xs_type(const xs_val *data);
int xs_size(const xs_val *data);
int xs_is_null(const xs_val *data);
int xs_cmp(const xs_val *v1, const xs_val *v2);
xs_val *xs_dup(const xs_val *data);
xs_val *xs_expand(xs_val *data, int offset, int size);
xs_val *xs_collapse(xs_val *data, int offset, int size);
@ -91,7 +92,6 @@ int xs_list_len(const xs_list *list);
xs_val *xs_list_get(const xs_list *list, int num);
xs_list *xs_list_del(xs_list *list, int num);
xs_list *xs_list_insert(xs_list *list, int num, const xs_val *data);
xs_list *xs_list_insert_sorted(xs_list *list, const char *str);
xs_list *xs_list_set(xs_list *list, int num, const xs_val *data);
xs_list *xs_list_dequeue(xs_list *list, xs_val **data, int last);
#define xs_list_pop(list, data) xs_list_dequeue(list, data, 1)
@ -350,6 +350,17 @@ int xs_is_null(const xs_val *data)
}
int xs_cmp(const xs_val *v1, const xs_val *v2)
/* compares two values */
{
int s1 = xs_size(v1);
int s2 = xs_size(v2);
int d = s1 - s2;
return d == 0 ? memcmp(v1, v2, s1) : d;
}
xs_val *xs_dup(const xs_val *data)
/* creates a duplicate of data */
{
@ -767,28 +778,6 @@ xs_list *xs_list_insert(xs_list *list, int num, const xs_val *data)
}
xs_list *xs_list_insert_sorted(xs_list *list, const xs_str *str)
/* inserts a string in the list in its ordered position */
{
XS_ASSERT_TYPE(list, XSTYPE_LIST);
XS_ASSERT_TYPE(str, XSTYPE_STRING);
char *p, *v;
int offset = xs_size(list);
p = list;
while (xs_list_iter(&p, &v)) {
/* if this element is greater or equal, insert here */
if (strcmp(v, str) >= 0) {
offset = v - list;
break;
}
}
return _xs_list_write_litem(list, offset - 1, str, xs_size(str));
}
xs_list *xs_list_set(xs_list *list, int num, const xs_val *data)
/* sets the element at #num position */
{

10
xs_unicode.h
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@ -5,6 +5,7 @@
#define _XS_UNICODE_H
int _xs_utf8_enc(char buf[4], unsigned int cpoint);
int xs_is_utf8_cont_byte(char c);
unsigned int xs_utf8_dec(char **str);
int xs_unicode_width(unsigned int cpoint);
int xs_is_surrogate(unsigned int cpoint);
@ -58,6 +59,13 @@ int _xs_utf8_enc(char buf[4], unsigned int cpoint)
}
int xs_is_utf8_cont_byte(char c)
/* returns true if c is an utf8 continuation byte */
{
return ((c & 0xc0) == 0x80);
}
unsigned int xs_utf8_dec(char **str)
/* decodes an utf-8 char inside str and updates the pointer */
{
@ -86,7 +94,7 @@ unsigned int xs_utf8_dec(char **str)
}
/* process the continuation bytes */
while (cb > 0 && *p && (*p & 0xc0) == 0x80)
while (cb > 0 && *p && xs_is_utf8_cont_byte(*p))
cpoint |= (*p++ & 0x3f) << (--cb * 6);
/* incomplete or broken? */

2
xs_version.h
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@ -1 +1 @@
/* 72caf9fc60c0b90f39a3c62b238d1c9663d109bc 2024-01-07T09:26:08+01:00 */
/* e277e59e0ccbe2111aaf884c85ccadeebabd5281 2024-01-30T13:56:36+01:00 */