implement PT_GNU_RELRO support

[musl] / src / locale / iconv.c

diff --git a/src/locale/iconv.c b/src/locale/iconv.c
index d3caafa..a0b0232 100644 (file)
--- a/src/locale/iconv.c
+++ b/src/locale/iconv.c
@@ -20,6 +20,7 @@
 #define GB18030     0330
 #define GBK         0331
 #define GB2312      0332
+#define BIG5        0340
 #define EUC_KR      0350
 
 /* FIXME: these are not implemented yet
@@ -48,6 +49,7 @@ static const unsigned char charmaps[] =
 "gb18030\0\0\330"
 "gbk\0\0\331"
 "gb2312\0\0\332"
+"big5\0bigfive\0cp950\0big5hkscs\0\0\340"
 "euckr\0ksc5601\0ksx1001\0cp949\0\0\350"
 #include "codepages.h"
 ;
@@ -64,6 +66,14 @@ static const unsigned short gb18030[126][190] = {
 #include "gb18030.h"
 };
 
+static const unsigned short big5[89][157] = {
+#include "big5.h"
+};
+
+static const unsigned short hkscs[] = {
+#include "hkscs.h"
+};
+
 static const unsigned short ksc[93][94] = {
 #include "ksc.h"
 };
@@ -284,6 +294,43 @@ size_t iconv(iconv_t cd0, char **restrict in, size_t *restrict inb, char **restr
                        if (d>63) d--;
                        c = gb18030[c][d];
                        break;
+               case BIG5:
+                       l = 2;
+                       if (*inb < 2) goto starved;
+                       d = *((unsigned char *)*in + 1);
+                       if (d-0x40>=0xff-0x40 || d-0x7f<0xa1-0x7f) goto ilseq;
+                       d -= 0x40;
+                       if (d > 0x3e) d -= 0x22;
+                       if (c-0xa1>=0xfa-0xa1) {
+                               if (c-0x87>=0xff-0x87) goto ilseq;
+                               if (c < 0xa1) c -= 0x87;
+                               else c -= 0x87 + (0xfa-0xa1);
+                               c = (hkscs[4867+(c*157+d)/16]>>(c*157+d)%16)%2<<17
+                                       | hkscs[c*157+d];
+                               /* A few HKSCS characters map to pairs of UCS
+                                * characters. These are mapped to surrogate
+                                * range in the hkscs table then hard-coded
+                                * here. Ugly, yes. */
+                               if (c/256 == 0xdc) {
+                                       if (totype-0300U > 8) k = 2;
+                                       else k = "\10\4\4\10\4\4\10\2\4"[totype-0300];
+                                       if (k > *outb) goto toobig;
+                                       x += iconv((iconv_t)(uintptr_t)to,
+                                               &(char *){"\303\212\314\204"
+                                               "\303\212\314\214"
+                                               "\303\252\314\204"
+                                               "\303\252\314\214"
+                                               +c%256}, &(size_t){4},
+                                               out, outb);
+                                       continue;
+                               }
+                               if (!c) goto ilseq;
+                               break;
+                       }
+                       c -= 0xa1;
+                       c = big5[c][d]|(c==0x27&&(d==0x3a||d==0x3c||d==0x42))<<17;
+                       if (!c) goto ilseq;
+                       break;
                case EUC_KR:
                        l = 2;
                        if (*inb < 2) goto starved;