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unichar.c
executable file
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unichar.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "unichar.h"
#include "mempool.h"
unichar *unistrdup(const unichar *str)
{
int len = unistrlen(str);
unichar *r = mm_alloc((len + 1) * sizeof(unichar) + sizeof(int));
unichar *rr = (unichar *)((int)r + sizeof(int));
*((int *)r) = len;
memcpy(rr, str, (len) * sizeof(unichar));
return rr;
}
unichar *unistrdup_str(const char *str)
{
int len = strlen(str);
unichar *r = mm_alloc((len + 1) * sizeof(unichar) + sizeof(int));
unichar *rr = (unichar *)((int)r + sizeof(int));
int i;
*((int *)r) = len;
for (i = 0; i < len; ++i) rr[i] = str[i];
return rr;
}
unichar *unisubstrdup(const unichar *a, int start, int len)
{
if (len == 0) return unistrdup_str("");
int lenofa = unistrlen(a);
while (start < 0) start += lenofa;
if (start >= lenofa) return unistrdup_str("");
int maxcpy = lenofa - start;
if (len > 0) {
maxcpy = maxcpy < len ? maxcpy : len;
}
unichar *r = mm_alloc((maxcpy + 1) * sizeof(unichar) + sizeof(int));
unichar *rr = (unichar *)((int)r + sizeof(int));
*((int *)r) = maxcpy;
memcpy(rr, a + start, maxcpy * sizeof(unichar));
return rr;
}
void unistrcpy(unichar *to, const unichar *from)
{
int len = unistrlen(from);
int i;
for (i = 0; i < len; ++i) to[i] = from[i];
unistrlen(to) = len;
}
void _uniprint(unichar *s)
{
int len = unistrlen(s);
int i;
for (i = 0; i < len; ++i) printf("%c", s[i]);
printf("\n");
}
void unifree(unichar *d)
{
mm_free((void *)(((int)d) - sizeof(int)));
}
int unistrchr(const unichar *str, int c)
{
int len = unistrlen(str);
int i;
for (i = 0; i < len; ++i) {
if (str[i] == c) return 1;
}
return 0;
}
const char *tochars(const unichar *str)
{
static char buf[65536];
int i;
int len = unistrlen(str);
for (i = 0; i < len && i < 65530; ++i) buf[i] = (char)str[i];
buf[i] = 0;
return buf;
}
const unichar *tounichars(const char *str)
{
static unichar buf[65536];
int *len = (int *)buf;
unichar *b = (unichar *)((int)buf + sizeof(int));
int i;
for (i = 0; str[i] && i < 65530; ++i) {
b[i] = str[i];
}
*len = i;
return b;
}
int unistrcmp(const unichar *str1, const unichar *str2)
{
int len1 = unistrlen(str1);
int len2 = unistrlen(str2);
int i, r;
if (len1 != len2) return len1 - len2;
for (i = 0; i < len1; ++i) {
if ((r = str1[i] - str2[i])) return r;
}
return 0;
}
unichar *unistrcat(const unichar *str1, const unichar *str2)
{
int len = unistrlen(str1) + unistrlen(str2);
unichar *r = mm_alloc((len + 1) * sizeof(unichar) + sizeof(int));
unichar *rr = (unichar *)((int)r + sizeof(int));
*((int *)r) = len;
memcpy(rr, str1, unistrlen(str1) * sizeof(unichar));
memcpy(rr + unistrlen(str1), str2, unistrlen(str2) * sizeof(unichar));
return rr;
}
int unistrpos(unichar *str, int start, unichar *s2)
{
unichar *s1 = str;
int l1 = unistrlen(s1);
int l2 = unistrlen(s2);
s1 += start;
l1 -= start;
while (l1 >= l2) {
if (memcmp(s1, s2, l2 * sizeof(unichar)) == 0) {
return s1 - str;
}
s1++;
l1--;
}
return -1;
}
/* strdup impletement */
char *c_strdup(const char *buf)
{
int len = strlen(buf);
char *ret = mm_alloc(len + 1);
memcpy(ret, buf, len + 1);
return ret;
}
void c_strfree(char *buf)
{
mm_free(buf);
}