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/* charsets.c
* (c) 2002 Mikulas Patocka, Karel 'Clock' Kulhavy
* This file is a part of the Links program, released under GPL.
*/
#include "links.h"
int utf8_table;
struct table_entry {
unsigned char c;
int u;
};
struct codepage_desc {
unsigned char *name;
unsigned char **aliases;
struct table_entry *table;
};
#include "codepage.inc"
#include "uni_7b.inc"
#include "entity.inc"
#include "upcase.inc"
char strings[256][2] = {
"\000", "\001", "\002", "\003", "\004", "\005", "\006", "\007",
"\010", "\011", "\012", "\013", "\014", "\015", "\016", "\017",
"\020", "\021", "\022", "\023", "\024", "\025", "\026", "\033",
"\030", "\031", "\032", "\033", "\034", "\035", "\036", "\033",
"\040", "\041", "\042", "\043", "\044", "\045", "\046", "\047",
"\050", "\051", "\052", "\053", "\054", "\055", "\056", "\057",
"\060", "\061", "\062", "\063", "\064", "\065", "\066", "\067",
"\070", "\071", "\072", "\073", "\074", "\075", "\076", "\077",
"\100", "\101", "\102", "\103", "\104", "\105", "\106", "\107",
"\110", "\111", "\112", "\113", "\114", "\115", "\116", "\117",
"\120", "\121", "\122", "\123", "\124", "\125", "\126", "\127",
"\130", "\131", "\132", "\133", "\134", "\135", "\136", "\137",
"\140", "\141", "\142", "\143", "\144", "\145", "\146", "\147",
"\150", "\151", "\152", "\153", "\154", "\155", "\156", "\157",
"\160", "\161", "\162", "\163", "\164", "\165", "\166", "\167",
"\170", "\171", "\172", "\173", "\174", "\175", "\176", "\177",
"\200", "\201", "\202", "\203", "\204", "\205", "\206", "\207",
"\210", "\211", "\212", "\213", "\214", "\215", "\216", "\217",
"\220", "\221", "\222", "\223", "\224", "\225", "\226", "\227",
"\230", "\231", "\232", "\233", "\234", "\235", "\236", "\237",
"\240", "\241", "\242", "\243", "\244", "\245", "\246", "\247",
"\250", "\251", "\252", "\253", "\254", "\255", "\256", "\257",
"\260", "\261", "\262", "\263", "\264", "\265", "\266", "\267",
"\270", "\271", "\272", "\273", "\274", "\275", "\276", "\277",
"\300", "\301", "\302", "\303", "\304", "\305", "\306", "\307",
"\310", "\311", "\312", "\313", "\314", "\315", "\316", "\317",
"\320", "\321", "\322", "\323", "\324", "\325", "\326", "\327",
"\330", "\331", "\332", "\333", "\334", "\335", "\336", "\337",
"\340", "\341", "\342", "\343", "\344", "\345", "\346", "\347",
"\350", "\351", "\352", "\353", "\354", "\355", "\356", "\357",
"\360", "\361", "\362", "\363", "\364", "\365", "\366", "\367",
"\370", "\371", "\372", "\373", "\374", "\375", "\376", "\377",
};
/* prototypes */
void free_translation_table(struct conv_table *);
void new_translation_table(struct conv_table *);
void add_utf_8(struct conv_table *, int, unsigned char *);
void free_utf_table(void);
struct conv_table *get_translation_table_to_utf_8(int);
void free_translation_table(struct conv_table *p)
{
int i;
for (i = 0; i < 256; i++) if (p[i].t) free_translation_table(p[i].u.tbl);
mem_free(p);
}
unsigned char *no_str = "*";
void new_translation_table(struct conv_table *p)
{
int i;
for (i = 0; i < 256; i++) if (p[i].t) free_translation_table(p[i].u.tbl);
for (i = 0; i < 128; i++) p[i].t = 0, p[i].u.str = strings[i];
for (; i < 256; i++) p[i].t = 0, p[i].u.str = no_str;
}
int strange_chars[32] = {
0x20ac, 0x0000, 0x002a, 0x0000, 0x201e, 0x2026, 0x2020, 0x2021,
0x005e, 0x2030, 0x0160, 0x003c, 0x0152, 0x0000, 0x0000, 0x0000,
0x0000, 0x0060, 0x0027, 0x0022, 0x0022, 0x002a, 0x2013, 0x2014,
0x007e, 0x2122, 0x0161, 0x003e, 0x0153, 0x0000, 0x0000, 0x0000,
};
#define U_EQUAL(a, b) unicode_7b[a].x == (b)
#define U_ABOVE(a, b) unicode_7b[a].x > (b)
unsigned char *u2cp(int u, int to, int fallback)
{
int j, s;
again:
if (u < 128) return strings[u];
if (u == 0xa0) return "\001";
if (u == 0xad) return "";
if (codepages[to].table == table_utf_8) return encode_utf_8(u);
if (u < 0xa0) {
u = strange_chars[u - 0x80];
if (!u) return NULL;
goto again;
}
for (j = 0; codepages[to].table[j].c; j++)
if (codepages[to].table[j].u == u)
return strings[codepages[to].table[j].c];
if (!fallback) return NULL;
BIN_SEARCH(N_UNICODE_7B, U_EQUAL, U_ABOVE, u, s);
if (s != -1) return unicode_7b[s].s;
return NULL;
}
int cp2u(unsigned char ch, int from)
{
struct table_entry *e;
if (from < 0 || ch < 0x80) return ch;
for (e = codepages[from].table; e->c; e++) if (e->c == ch) return e->u;
return -1;
}
unsigned char utf_buffer[7];
unsigned char *encode_utf_8(int u)
{
memset(utf_buffer, 0, 7);
if (u < 0x80) utf_buffer[0] = u;
else if (u < 0x800)
utf_buffer[0] = 0xc0 | ((u >> 6) & 0x1f),
utf_buffer[1] = 0x80 | (u & 0x3f);
else if (u < 0x10000)
utf_buffer[0] = 0xe0 | ((u >> 12) & 0x0f),
utf_buffer[1] = 0x80 | ((u >> 6) & 0x3f),
utf_buffer[2] = 0x80 | (u & 0x3f);
else if (u < 0x200000)
utf_buffer[0] = 0xf0 | ((u >> 18) & 0x0f),
utf_buffer[1] = 0x80 | ((u >> 12) & 0x3f),
utf_buffer[2] = 0x80 | ((u >> 6) & 0x3f),
utf_buffer[3] = 0x80 | (u & 0x3f);
else if (u < 0x4000000)
utf_buffer[0] = 0xf8 | ((u >> 24) & 0x0f),
utf_buffer[1] = 0x80 | ((u >> 18) & 0x3f),
utf_buffer[2] = 0x80 | ((u >> 12) & 0x3f),
utf_buffer[3] = 0x80 | ((u >> 6) & 0x3f),
utf_buffer[4] = 0x80 | (u & 0x3f);
else utf_buffer[0] = 0xfc | ((u >> 30) & 0x01),
utf_buffer[1] = 0x80 | ((u >> 24) & 0x3f),
utf_buffer[2] = 0x80 | ((u >> 18) & 0x3f),
utf_buffer[3] = 0x80 | ((u >> 12) & 0x3f),
utf_buffer[4] = 0x80 | ((u >> 6) & 0x3f),
utf_buffer[5] = 0x80 | (u & 0x3f);
return utf_buffer;
}
void add_utf_8(struct conv_table *ct, int u, unsigned char *str)
{
unsigned char *p = encode_utf_8(u);
while (p[1]) {
if (ct[*p].t) ct = ct[*p].u.tbl;
else {
struct conv_table *nct;
if (ct[*p].u.str != no_str) {
internal("bad utf encoding #1");
return;
}
nct = mem_alloc(sizeof(struct conv_table) * 256);
memset(nct, 0, sizeof(struct conv_table) * 256);
new_translation_table(nct);
ct[*p].t = 1;
ct[*p].u.tbl = nct;
ct = nct;
}
p++;
}
if (ct[*p].t) {
internal("bad utf encoding #2");
return;
}
if (ct[*p].u.str == no_str) ct[*p].u.str = str;
}
struct conv_table utf_table[256];
int utf_table_init = 1;
void free_utf_table(void)
{
int i;
for (i = 128; i < 256; i++) mem_free(utf_table[i].u.str);
}
struct conv_table *get_translation_table_to_utf_8(int from)
{
int i;
static int lfr = -1;
if (from == -1) return NULL;
if (from == lfr) return utf_table;
if (utf_table_init) memset(utf_table, 0, sizeof(struct conv_table) * 256), utf_table_init = 0;
else free_utf_table();
for (i = 0; i < 128; i++) utf_table[i].u.str = strings[i];
if (codepages[from].table == table_utf_8) {
for (i = 128; i < 256; i++) utf_table[i].u.str = stracpy(strings[i]);
return utf_table;
}
for (i = 128; i < 256; i++) utf_table[i].u.str = NULL;
for (i = 0; codepages[from].table[i].c; i++) {
int u = codepages[from].table[i].u;
if (!utf_table[codepages[from].table[i].c].u.str)
utf_table[codepages[from].table[i].c].u.str = stracpy(encode_utf_8(u));
}
for (i = 128; i < 256; i++)
if (!utf_table[i].u.str) utf_table[i].u.str = stracpy(no_str);
return utf_table;
}
unsigned short int utf8_2_uni_table[0x200] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 128, 0, 0, 0, 192, 0,
0, 0, 256, 0, 0, 0, 320, 0, 0, 0, 384, 0, 0, 0, 448, 0,
0, 0, 512, 0, 0, 0, 576, 0, 0, 0, 640, 0, 0, 0, 704, 0,
0, 0, 768, 0, 0, 0, 832, 0, 0, 0, 896, 0, 0, 0, 960, 0,
0, 0, 1024, 0, 0, 0, 1088, 0, 0, 0, 1152, 0, 0, 0, 1216, 0,
0, 0, 1280, 0, 0, 0, 1344, 0, 0, 0, 1408, 0, 0, 0, 1472, 0,
0, 0, 1536, 0, 0, 0, 1600, 0, 0, 0, 1664, 0, 0, 0, 1728, 0,
0, 0, 1792, 0, 0, 0, 1856, 0, 0, 0, 1920, 0, 0, 0, 1984, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
unsigned char utf_8_1[256] = {
0, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 0, 0,
};
int get_utf_8(unsigned char **s)
{
int v, l;
unsigned char *p = *s;
if (!(l = utf_8_1[p[0]])) {
(*s)++;
ret:
return 0;
}
v = p[0] & ((1 << l) - 1);
(*s)++;
while (l++ <= 5) {
int c = **s - 0x80;
if (c < 0 || c >= 0x40) goto ret;
(*s)++;
v = (v << 6) + c;
}
return v;
}
struct conv_table table[256];
int table_init = 1;
void free_conv_table(void)
{
if (!utf_table_init) free_utf_table();
if (!table_init) new_translation_table(table);
}
struct conv_table *get_translation_table(int from, int to)
{
int i;
static int lfr = -1;
static int lto = -1;
if (/*from == to ||*/ from == -1 || to == -1) return NULL;
if (codepages[to].table == table_utf_8) return get_translation_table_to_utf_8(from);
if (table_init) memset(table, 0, sizeof(struct conv_table) * 256), table_init = 0;
if (from == lfr && to == lto) return table;
lfr = from; lto = to;
new_translation_table(table);
if (codepages[from].table == table_utf_8) {
int j;
for (j = 0; codepages[to].table[j].c; j++) add_utf_8(table, codepages[to].table[j].u, codepages[to].table[j].u == 0xa0 ? "\001" : codepages[to].table[j].u == 0xad ? "" : strings[codepages[to].table[j].c]);
for (i = 0; unicode_7b[i].x != -1; i++) if (unicode_7b[i].x >= 0x80) add_utf_8(table, unicode_7b[i].x, unicode_7b[i].s);
} else for (i = 128; i < 256; i++) {
int j;
char *u;
for (j = 0; codepages[from].table[j].c; j++) {
if (codepages[from].table[j].c == i) goto f;
}
continue;
f:
u = u2cp(codepages[from].table[j].u, to, 1);
if (u) table[i].u.str = u;
}
return table;
}
static inline int xxstrcmp(unsigned char *s1, unsigned char *s2, int l2)
{
while (l2) {
if (*s1 > *s2) return 1;
if (!*s1 || *s1 < *s2) return -1;
s1++, s2++, l2--;
}
return !!*s1;
}
int get_entity_number(unsigned char *st, int l)
{
int n = 0;
if (upcase(st[0]) == 'X') {
st++, l--;
if (!l) return -1;
do {
char c = upcase(*(st++));
if (c >= '0' && c <= '9') n = n * 16 + c - '0';
else if (c >= 'A' && c <= 'F') n = n * 16 + c - 'A' + 10;
else return -1;
if (n >= 0x10000) return -1;
} while (--l);
} else {
if (!l) return -1;
do {
char c = *(st++);
if (c >= '0' && c <= '9') n = n * 10 + c - '0';
else return -1;
if (n >= 0x10000) return -1;
} while (--l);
}
return n;
}
unsigned char *get_entity_string(unsigned char *st, int l, int encoding)
{
int n;
if (l <= 0) return NULL;
if (st[0] == '#') {
if (l == 1) return NULL;
if ((n = get_entity_number(st + 1, l - 1)) == -1) return NULL;
if (n < 32 && get_attr_val_nl != 2) n = 32;
} else {
int s = 0, e = N_ENTITIES - 1;
while (s <= e) {
int c;
int m = (s + e) / 2;
c = xxstrcmp(entities[m].s, st, l);
if (!c) {
n = entities[m].c;
goto f;
}
if (c > 0) e = m - 1;
else s = m + 1;
}
return NULL;
f:;
}
return u2cp(n, encoding, 1);
}
unsigned char *convert_string(struct conv_table *ct, unsigned char *c, int l, struct document_options *dopt)
{
unsigned char *buffer;
int bp = 0;
int pp = 0;
if (!ct) {
int i;
for (i = 0; i < l; i++) if (c[i] == '&') goto xx;
return memacpy(c, l);
xx:;
}
buffer = mem_alloc(ALLOC_GR);
while (pp < l) {
unsigned char *e;
if (c[pp] < 128 && c[pp] != '&') {
putc:
buffer[bp++] = c[pp++];
if (!(bp & (ALLOC_GR - 1))) {
if ((unsigned)bp > MAXINT - ALLOC_GR) overalloc();
buffer = mem_realloc(buffer, bp + ALLOC_GR);
}
continue;
}
if (c[pp] != '&') {
struct conv_table *t;
int i;
if (!ct) goto putc;
t = ct;
i = pp;
decode:
if (!t[c[i]].t) {
e = t[c[i]].u.str;
} else {
t = t[c[i++]].u.tbl;
if (i >= l) goto putc;
goto decode;
}
pp = i + 1;
} else {
int i = pp + 1;
if (!dopt || dopt->plain) goto putc;
while (i < l && c[i] != ';' && c[i] != '&' && c[i] > ' ') i++;
if (!(e = get_entity_string(&c[pp + 1], i - pp - 1, dopt->cp))) goto putc;
pp = i + (i < l && c[i] == ';');
}
if (!e[0]) continue;
if (!e[1]) {
buffer[bp++] = e[0];
if (!(bp & (ALLOC_GR - 1))) {
if ((unsigned)bp > MAXINT - ALLOC_GR) overalloc();
buffer = mem_realloc(buffer, bp + ALLOC_GR);
}
continue;
}
while (*e) {
buffer[bp++] = *(e++);
if (!(bp & (ALLOC_GR - 1))) {
if ((unsigned)bp > MAXINT - ALLOC_GR) overalloc();
buffer = mem_realloc(buffer, bp + ALLOC_GR);
}
}
}
buffer[bp] = 0;
return buffer;
}
/* 1 match 0 mismatch */
static inline int compare_names(unsigned char *one, unsigned char *two)
{
while(1){
if (!*one) return !*two;
if (!*two||(upcase(*one)!=upcase(*two))) return 0;
one++;
two++;
}
}
/*
int get_cp_index(unsigned char *n)
{
int i, a;
for (i = 0; codepages[i].name; i++) {
if (compare_names(n,codepages[i].name)) return i;
for (a = 0; codepages[i].aliases[a]; a++)
if (compare_names(n,codepages[i].aliases[a])) return i;
}
return -1;
}
*/
int get_cp_index(unsigned char *n)
{
int i, a, p, q;
int ii = -1, ll = 0;
for (i = 0; codepages[i].name; i++) {
for (a = 0; codepages[i].aliases[a]; a++) {
for (p = 0; n[p]; p++) {
if (upcase(n[p]) == upcase(codepages[i].aliases[a][0])) {
for (q = 1; codepages[i].aliases[a][q]; q++) {
if (upcase(n[p+q]) != upcase(codepages[i].aliases[a][q])) goto fail;
}
if (strlen(codepages[i].aliases[a]) > (size_t)ll) {
ll = strlen(codepages[i].aliases[a]);
ii = i;
}
}
fail:;
}
}
}
return ii;
}
unsigned char *get_cp_name(int index)
{
if (index < 0) return "none";
return codepages[index].name;
}
unsigned char *get_cp_mime_name(int index)
{
if (index < 0) return "none";
if (!codepages[index].aliases) return NULL;
return codepages[index].aliases[0];
}
#define UP_EQUAL(a, b) unicode_upcase[a].lo == (b)
#define UP_ABOVE(a, b) unicode_upcase[a].lo > (b)
unsigned charset_upcase(unsigned ch, int cp)
{
unsigned u;
int res;
unsigned char *str;
if (ch < 0x80) return upcase(ch);
u = cp2u(ch, cp);
BIN_SEARCH(sizeof(unicode_upcase) / sizeof(*unicode_upcase), UP_EQUAL, UP_ABOVE, u, res);
if (res == -1) return ch;
if (codepages[cp].table == table_utf_8) return unicode_upcase[res].up;
str = u2cp(unicode_upcase[res].up, cp, 0);
if (!str || !str[0] || str[1]) return ch;
return str[0];
}
unsigned uni_upcase(unsigned ch)
{
int cp = get_cp_index("utf-8");
if (cp < 0) cp = 0;
return charset_upcase(ch, cp);
}
void charset_upcase_string(unsigned char **chp, int cp)
{
unsigned char *ch = *chp;
int i;
if (codepages[cp].table == table_utf_8) {
ch = unicode_upcase_string(ch);
mem_free(*chp);
*chp = ch;
} else {
for (i = 0; ch[i]; i++) ch[i] = charset_upcase(ch[i], cp);
}
}
unsigned char *unicode_upcase_string(unsigned char *ch)
{
unsigned char *r = init_str();
int rl = 0;
while (1) {
unsigned c;
int res;
GET_UTF_8(ch, c);
if (!c) break;
BIN_SEARCH(sizeof(unicode_upcase) / sizeof(*unicode_upcase), UP_EQUAL, UP_ABOVE, c, res);
if (res != -1) c = unicode_upcase[res].up;
add_to_str(&r, &rl, encode_utf_8(c));
}
return r;
}
unsigned char *to_utf8_upcase(unsigned char *str, int cp)
{
unsigned char *str1, *str2;
struct conv_table *ct = get_translation_table(cp, get_cp_index("utf-8"));
str1 = convert_string(ct, str, strlen(str), NULL);
str2 = unicode_upcase_string(str1);
mem_free(str1);
return str2;
}
int compare_case_utf8(unsigned char *u1, unsigned char *u2)
{
unsigned char *uu1 = u1;
unsigned c1, c2;
int cc1;
while (1) {
GET_UTF_8(u2, c2);
if (!c2) return u1 - uu1;
skip_discr:
GET_UTF_8(u1, c1);
BIN_SEARCH(sizeof(unicode_upcase) / sizeof(*unicode_upcase), UP_EQUAL, UP_ABOVE, c1, cc1);
if (cc1 != -1) c1 = unicode_upcase[cc1].up;
if (c1 == 0xad) goto skip_discr;
if (c1 != c2) return 0;
if (c1 == ' ') {
unsigned char *x1;
do {
x1 = u1;
GET_UTF_8(u1, c1);
BIN_SEARCH(sizeof(unicode_upcase) / sizeof(*unicode_upcase), UP_EQUAL, UP_ABOVE, c1, cc1);
if (cc1 != -1) c1 = unicode_upcase[cc1].up;
} while (c1 == ' ');
u1 = x1;
}
}
}
int strlen_utf8(unsigned char *s)
{
int len = 0;
while (1) {
unsigned c;
GET_UTF_8(s, c);
if (!c) return len;
len++;
}
}
unsigned char *cp_strchr(int charset, unsigned char *str, unsigned chr)
{
if (!is_cp_special(charset)) {
if (chr >= 0x100)
return NULL;
return strchr(str, chr);
}
while (1) {
unsigned char *o_str = str;
unsigned c;
GET_UTF_8(str, c);
if (!c) return NULL;
if (c == chr) return o_str;
}
}
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