--- /dev/null
+/*
+** Copyright 2000-2002 Double Precision, Inc.
+** See COPYING for distribution information.
+**
+** $Id: big5.c,v 1.14 2004/05/23 14:28:24 mrsam Exp $
+*/
+
+#include "big5.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define BIG5_HKSCS_EXTENSION 1
+
+static const unicode_char * const big5fwdlo[]= {
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ big5_88_lo,
+ big5_89_lo,
+ big5_8a_lo,
+ big5_8b_lo,
+ big5_8c_lo,
+ big5_8d_lo,
+ big5_8e_lo,
+ big5_8f_lo,
+ big5_90_lo,
+ big5_91_lo,
+ big5_92_lo,
+ big5_93_lo,
+ big5_94_lo,
+ big5_95_lo,
+ big5_96_lo,
+ big5_97_lo,
+ big5_98_lo,
+ big5_99_lo,
+ big5_9a_lo,
+ big5_9b_lo,
+ big5_9c_lo,
+ big5_9d_lo,
+ big5_9e_lo,
+ big5_9f_lo,
+ big5_a0_lo,
+ big5_a1_lo,
+ big5_a2_lo,
+ big5_a3_lo,
+ big5_a4_lo,
+ big5_a5_lo,
+ big5_a6_lo,
+ big5_a7_lo,
+ big5_a8_lo,
+ big5_a9_lo,
+ big5_aa_lo,
+ big5_ab_lo,
+ big5_ac_lo,
+ big5_ad_lo,
+ big5_ae_lo,
+ big5_af_lo,
+ big5_b0_lo,
+ big5_b1_lo,
+ big5_b2_lo,
+ big5_b3_lo,
+ big5_b4_lo,
+ big5_b5_lo,
+ big5_b6_lo,
+ big5_b7_lo,
+ big5_b8_lo,
+ big5_b9_lo,
+ big5_ba_lo,
+ big5_bb_lo,
+ big5_bc_lo,
+ big5_bd_lo,
+ big5_be_lo,
+ big5_bf_lo,
+ big5_c0_lo,
+ big5_c1_lo,
+ big5_c2_lo,
+ big5_c3_lo,
+ big5_c4_lo,
+ big5_c5_lo,
+ big5_c6_lo,
+ big5_c7_lo,
+ big5_c8_lo,
+ big5_c9_lo,
+ big5_ca_lo,
+ big5_cb_lo,
+ big5_cc_lo,
+ big5_cd_lo,
+ big5_ce_lo,
+ big5_cf_lo,
+ big5_d0_lo,
+ big5_d1_lo,
+ big5_d2_lo,
+ big5_d3_lo,
+ big5_d4_lo,
+ big5_d5_lo,
+ big5_d6_lo,
+ big5_d7_lo,
+ big5_d8_lo,
+ big5_d9_lo,
+ big5_da_lo,
+ big5_db_lo,
+ big5_dc_lo,
+ big5_dd_lo,
+ big5_de_lo,
+ big5_df_lo,
+ big5_e0_lo,
+ big5_e1_lo,
+ big5_e2_lo,
+ big5_e3_lo,
+ big5_e4_lo,
+ big5_e5_lo,
+ big5_e6_lo,
+ big5_e7_lo,
+ big5_e8_lo,
+ big5_e9_lo,
+ big5_ea_lo,
+ big5_eb_lo,
+ big5_ec_lo,
+ big5_ed_lo,
+ big5_ee_lo,
+ big5_ef_lo,
+ big5_f0_lo,
+ big5_f1_lo,
+ big5_f2_lo,
+ big5_f3_lo,
+ big5_f4_lo,
+ big5_f5_lo,
+ big5_f6_lo,
+ big5_f7_lo,
+ big5_f8_lo,
+ big5_f9_lo,
+ big5_fa_lo,
+ big5_fb_lo,
+ big5_fc_lo,
+ big5_fd_lo,
+ big5_fe_lo};
+
+static const unicode_char * const big5fwdhi[]= {
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ big5_88_hi,
+ big5_89_hi,
+ big5_8a_hi,
+ big5_8b_hi,
+ big5_8c_hi,
+ big5_8d_hi,
+ big5_8e_hi,
+ big5_8f_hi,
+ big5_90_hi,
+ big5_91_hi,
+ big5_92_hi,
+ big5_93_hi,
+ big5_94_hi,
+ big5_95_hi,
+ big5_96_hi,
+ big5_97_hi,
+ big5_98_hi,
+ big5_99_hi,
+ big5_9a_hi,
+ big5_9b_hi,
+ big5_9c_hi,
+ big5_9d_hi,
+ big5_9e_hi,
+ big5_9f_hi,
+ big5_a0_hi,
+ big5_a1_hi,
+ big5_a2_hi,
+ big5_a3_hi,
+ big5_a4_hi,
+ big5_a5_hi,
+ big5_a6_hi,
+ big5_a7_hi,
+ big5_a8_hi,
+ big5_a9_hi,
+ big5_aa_hi,
+ big5_ab_hi,
+ big5_ac_hi,
+ big5_ad_hi,
+ big5_ae_hi,
+ big5_af_hi,
+ big5_b0_hi,
+ big5_b1_hi,
+ big5_b2_hi,
+ big5_b3_hi,
+ big5_b4_hi,
+ big5_b5_hi,
+ big5_b6_hi,
+ big5_b7_hi,
+ big5_b8_hi,
+ big5_b9_hi,
+ big5_ba_hi,
+ big5_bb_hi,
+ big5_bc_hi,
+ big5_bd_hi,
+ big5_be_hi,
+ big5_bf_hi,
+ big5_c0_hi,
+ big5_c1_hi,
+ big5_c2_hi,
+ big5_c3_hi,
+ big5_c4_hi,
+ big5_c5_hi,
+ big5_c6_hi,
+ big5_c7_hi,
+ big5_c8_hi,
+ big5_c9_hi,
+ big5_ca_hi,
+ big5_cb_hi,
+ big5_cc_hi,
+ big5_cd_hi,
+ big5_ce_hi,
+ big5_cf_hi,
+ big5_d0_hi,
+ big5_d1_hi,
+ big5_d2_hi,
+ big5_d3_hi,
+ big5_d4_hi,
+ big5_d5_hi,
+ big5_d6_hi,
+ big5_d7_hi,
+ big5_d8_hi,
+ big5_d9_hi,
+ big5_da_hi,
+ big5_db_hi,
+ big5_dc_hi,
+ big5_dd_hi,
+ big5_de_hi,
+ big5_df_hi,
+ big5_e0_hi,
+ big5_e1_hi,
+ big5_e2_hi,
+ big5_e3_hi,
+ big5_e4_hi,
+ big5_e5_hi,
+ big5_e6_hi,
+ big5_e7_hi,
+ big5_e8_hi,
+ big5_e9_hi,
+ big5_ea_hi,
+ big5_eb_hi,
+ big5_ec_hi,
+ big5_ed_hi,
+ big5_ee_hi,
+ big5_ef_hi,
+ big5_f0_hi,
+ big5_f1_hi,
+ big5_f2_hi,
+ big5_f3_hi,
+ big5_f4_hi,
+ big5_f5_hi,
+ big5_f6_hi,
+ big5_f7_hi,
+ big5_f8_hi,
+ big5_f9_hi,
+ big5_fa_hi,
+ big5_fb_hi,
+ big5_fc_hi,
+ big5_fd_hi,
+ big5_fe_hi};
+
+static unicode_char *c2u_doconv(const struct unicode_info *u,
+ const char *cp, int *err, int compat)
+{
+ size_t i, cnt;
+ unicode_char *uc;
+
+ if (err)
+ *err= -1;
+
+ /*
+ ** Count the number of potential unicode characters first.
+ */
+
+ for (i=cnt=0; cp[i]; i++)
+ {
+ if ((int)(unsigned char)cp[i] < 0x88 ||
+ (int)(unsigned char)cp[i] > 0xFE ||
+ cp[i+1] == 0)
+ {
+ ++cnt;
+ continue;
+ }
+
+ ++i;
+ ++cnt;
+ }
+
+ uc=malloc((cnt+1)*sizeof(unicode_char));
+ if (!uc)
+ return (NULL);
+
+ i=cnt=0;
+ while (cp[i])
+ {
+ unsigned int a=(int)(unsigned char)cp[i], b;
+
+ /* 2-byte Character */
+ if ((unsigned)0x88 <= a && a <= (unsigned)0xFE && cp[i+1])
+ {
+ unicode_char ucv;
+ b=(int)(unsigned char)cp[i+1];
+
+ /* ranges extended by HKSCS */
+ if (!(compat & BIG5_HKSCS_EXTENSION)
+ && (a < (unsigned)0xA1
+ || (a == (unsigned)0xC6
+ && (unsigned)0xBF <= b && b <= (unsigned)0xD7)))
+ ucv = (unicode_char)0xFFFD;
+ /* 0xXX40-0xXX7E */
+ else if (0x40 <= b && b <= 0x7E
+ && big5fwdlo[a-0x81]
+ && (ucv=big5fwdlo[a-0x81][b-0x40]))
+ ;
+ /* 0xXXA1-0xXXFE */
+ else if ((unsigned)0xA1 <= b && b <= (unsigned)0xFE
+ && big5fwdhi[a-0x81]
+ && (ucv=big5fwdhi[a-0x81][b-0xA1]))
+ ;
+ /* Not found */
+ else
+ ucv = (unicode_char)0xFFFD;
+
+ /* mapped to PUA by HKSCS extension */
+ if (!(compat & BIG5_HKSCS_EXTENSION)
+ && (unicode_char)0xE000 <= ucv
+ && ucv <= (unicode_char)0xF8FF)
+ ucv = (unicode_char)0xFFFD;
+
+ if (ucv == (unicode_char)0xFFFD && err)
+ {
+ *err = i;
+ free(uc);
+ return NULL;
+ }
+ uc[cnt++] = ucv;
+ i += 2;
+ }
+ /* US-ASCII */
+ else if (a < (unsigned)0x80)
+ {
+ uc[cnt++]=a;
+ i += 1;
+ }
+ /* Not Found */
+ else if (err)
+ {
+ *err=i;
+ free(uc);
+ return (NULL);
+ }
+ else
+ {
+ uc[cnt++] = (unicode_char)0xFFFD;
+ i += 1;
+ }
+ }
+ uc[cnt]=0;
+
+ return (uc);
+}
+
+static unicode_char *c2u_eten(const struct unicode_info *u,
+ const char *cp, int *err)
+{
+ return c2u_doconv(u, cp, err, 0);
+}
+
+static unicode_char *c2u_hkscs(const struct unicode_info *u,
+ const char *cp, int *err)
+{
+ return c2u_doconv(u, cp, err, BIG5_HKSCS_EXTENSION);
+}
+
+static unsigned revlookup(unicode_char c)
+{
+ unsigned j;
+ unsigned bucket;
+ unsigned uc;
+
+ bucket=c % big5_revhash_size;
+ uc=0;
+
+ for (j=big5_revtable_index[ bucket ];
+ j < sizeof(big5_revtable_uc)/sizeof(big5_revtable_uc[0]);
+ ++j)
+ {
+ unicode_char uuc=big5_revtable_uc[j];
+
+ if (uuc == c)
+ return (big5_revtable_octets[j]);
+
+ if ((uuc % big5_revhash_size) != bucket)
+ break;
+ }
+ return (0);
+}
+
+static char *u2c_doconv(const struct unicode_info *u,
+ const unicode_char *cp, int *err, int compat)
+{
+ size_t cnt, i;
+ char *s;
+
+ if (err)
+ *err= -1;
+ /*
+ ** Figure out the size of the octet string. Unicodes < 0x7f will
+ ** map to a single byte, unicodes >= 0x80 will map to two bytes.
+ */
+
+ for (i=cnt=0; cp[i]; i++)
+ {
+ if (cp[i] > 0x7f)
+ ++cnt;
+ ++cnt;
+ }
+
+ s=malloc(cnt+1);
+ if (!s)
+ return (NULL);
+ cnt=0;
+
+ for (i=0; cp[i]; i++)
+ {
+ unsigned uc;
+
+ /* US-ASCII */
+ if (cp[i] < (unicode_char)0x0080)
+ {
+ s[cnt++]= (char)cp[i];
+ continue;
+ }
+ /* PUA by HKSCS */
+ if (!(compat & BIG5_HKSCS_EXTENSION)
+ && (unicode_char)0xE000 <= cp[i]
+ && cp[i] <= (unicode_char)0xF8FF)
+ {
+ if (err)
+ {
+ *err=i;
+ free(s);
+ return (NULL);
+ }
+ s[cnt++] = '?';
+ continue;
+ }
+
+ uc=revlookup(cp[i]);
+
+ if (!uc
+ || (!(compat & BIG5_HKSCS_EXTENSION)
+ && (uc < (unsigned)0xA140
+ || ((unsigned)0xC6BF <= uc && uc <= (unsigned)0xC6D7))))
+ {
+ if (err)
+ {
+ *err=i;
+ free(s);
+ return (NULL);
+ }
+ s[cnt++] = '?';
+ }
+ else
+ {
+ s[cnt++]= (char)(uc >> 8);
+ s[cnt++]= (char)(uc & 0x00FF);
+ }
+ }
+ s[cnt]=0;
+ return (s);
+}
+
+static char *u2c_eten(const struct unicode_info *u,
+ const unicode_char *cp, int *err)
+{
+ return u2c_doconv(u, cp, err, 0);
+}
+
+static char *u2c_hkscs(const struct unicode_info *u,
+ const unicode_char *cp, int *err)
+{
+ return u2c_doconv(u, cp, err, BIG5_HKSCS_EXTENSION);
+}
+
+static char *toupper_func(const struct unicode_info *u,
+ const char *cp, int *ip)
+{
+ unicode_char *uc=(*u->c2u)(u, cp, ip);
+ char *s;
+
+ unsigned i;
+
+ if (!uc)
+ return (NULL);
+
+ for (i=0; uc[i]; i++)
+ {
+ unicode_char c=unicode_uc(uc[i]);
+
+ if (revlookup(c))
+ uc[i]=c;
+ }
+
+ s=(*u->u2c)(u, uc, NULL);
+ free(uc);
+ return (s);
+}
+
+static char *tolower_func(const struct unicode_info *u,
+ const char *cp, int *ip)
+{
+ unicode_char *uc=(*u->c2u)(u, cp, ip);
+ char *s;
+
+ unsigned i;
+
+ if (!uc)
+ return (NULL);
+
+ for (i=0; uc[i]; i++)
+ {
+ unicode_char c=unicode_lc(uc[i]);
+
+ if (revlookup(c))
+ uc[i]=c;
+ }
+
+ s=(*u->u2c)(u, uc, NULL);
+ free(uc);
+ return (s);
+}
+
+static char *totitle_func(const struct unicode_info *u,
+ const char *cp, int *ip)
+{
+ unicode_char *uc=(*u->c2u)(u, cp, ip);
+ char *s;
+
+ unsigned i;
+
+ if (!uc)
+ return (NULL);
+
+ for (i=0; uc[i]; i++)
+ {
+ unicode_char c=unicode_tc(uc[i]);
+
+ if (revlookup(c))
+ uc[i]=c;
+ }
+
+ s=(*u->u2c)(u, uc, NULL);
+ free(uc);
+ return (s);
+}
+
+const struct unicode_info unicode_BIG5_ETEN = {
+ "BIG5",
+ UNICODE_MB | UNICODE_REPLACEABLE | UNICODE_USASCII |
+ UNICODE_HEADER_BASE64 | UNICODE_BODY_BASE64,
+ c2u_eten,
+ u2c_eten,
+ toupper_func,
+ tolower_func,
+ totitle_func};
+
+const struct unicode_info unicode_BIG5_HKSCS = {
+ "BIG5-HKSCS",
+ UNICODE_MB | UNICODE_REPLACEABLE | UNICODE_USASCII |
+ UNICODE_HEADER_BASE64 | UNICODE_BODY_BASE64,
+ c2u_hkscs,
+ u2c_hkscs,
+ toupper_func,
+ tolower_func,
+ totitle_func};
+
+#if 0
+
+int main()
+{
+ FILE *fp=popen("gunzip -cd <Unihan-3.2.0.txt.gz", "r");
+ char buf[4000];
+ unicode_char *uc;
+ char *s, *p;
+ int dummyi;
+
+ if (!fp)
+ return (0);
+
+ while (fgets(buf, sizeof(buf), fp))
+ {
+ unsigned a, b, c;
+ int dummy;
+
+ if (sscanf(buf, "U+%4x kBigFive %4x", &b, &a) != 2)
+ continue;
+ printf("0x%04x 0x%04x: ", a, b);
+
+ buf[0]= a / 256;
+ buf[1]= a % 256;
+ buf[2]=0;
+
+ uc=c2u(buf, &dummy);
+ if (!uc)
+ {
+ printf("c2u failure: %d\n", dummy);
+ return (1);
+ }
+ if (uc[0] != b || uc[1])
+ {
+ printf("c2u failure: got 0x%04x, expected 0x%04x\n",
+ (unsigned)uc[0], (unsigned)b);
+ return (1);
+ }
+ s=u2c(uc, &dummy);
+ if (s == NULL && uc[0] == 0xfffd)
+ {
+ free(uc);
+ printf("Ok\n");
+ continue; /* Unmapped */
+ }
+ free(uc);
+ if (!s)
+ {
+ printf("u2c failure: %d\n", dummy);
+ return (1);
+ }
+
+ c=0;
+ if (!s[0] || !s[1] || s[2] ||
+ (c=(int)(unsigned char)s[0] * 256 +
+ (unsigned char)s[1]) != a)
+ {
+ printf("u2c failure: got 0x%04x, expected 0x%04x\n",
+ c, a);
+ return (1);
+ }
+
+ p=toupper_func(s, NULL);
+ if (!p)
+ {
+ printf("toupper failure\n");
+ return (1);
+ }
+ if (strcmp(p, s))
+ printf("toupper ");
+ free(p);
+
+ p=tolower_func(s, NULL);
+ if (!p)
+ {
+ printf("tolower failure\n");
+ return (1);
+ }
+ if (strcmp(p, s))
+ printf("tolower ");
+ free(p);
+
+ p=totitle_func(s, NULL);
+ if (!p)
+ {
+ printf("totitle failure\n");
+ return (1);
+ }
+ if (strcmp(p, s))
+ printf("totitle ");
+ free(p);
+
+ free(s);
+ printf("ok\n");
+ }
+ fclose(fp);
+
+ buf[0]=0x40;
+ buf[1]=0;
+ uc=c2u(buf, NULL);
+
+ if (!uc)
+ {
+ printf("us-ascii c2u failure\n");
+ return (1);
+ }
+ s=u2c(uc, NULL);
+ free(uc);
+ if (!s)
+ {
+ printf("us-ascii u2c failure\n");
+ return (1);
+ }
+ free(s);
+
+ buf[0]=0xA2;
+ buf[1]=0x40;
+ buf[2]=0;
+
+ uc=c2u(buf, NULL);
+ if (!uc)
+ {
+ printf("fallback failed\n");
+ return (1);
+ }
+ printf("fallback: %04x %04x\n", (unsigned)uc[0],
+ (unsigned)uc[1]);
+
+ s=u2c(uc, NULL);
+ free(uc);
+
+ if (!s)
+ {
+ printf("fallback-reverse failed\n");
+ return (1);
+ }
+ printf("fallback: %02x %02x\n", (int)(unsigned char)s[0],
+ (int)(unsigned char)s[1]);
+ free(s);
+
+ buf[0]=0xA2;
+ buf[1]=0x40;
+ buf[2]=0;
+
+ uc=c2u(buf, &dummyi);
+
+ if (uc)
+ {
+ printf("abort failed\n");
+ return (1);
+ }
+
+ printf("aborted at index %d\n", dummyi);
+
+ {
+ static unicode_char testing[]={0x0040, 0x1000, 0};
+
+ uc=testing;
+
+ s=u2c(uc, NULL);
+
+ if (!s)
+ {
+ printf("abort-fallback failed\n");
+ return (1);
+ }
+ printf("abort-fallback: %02x %02x\n", (int)(unsigned char)s[0],
+ (int)(unsigned char)s[1]);
+ free(s);
+
+ uc=testing;
+ }
+
+ s=u2c(uc, &dummyi);
+
+ if (s)
+ {
+ printf("abort-abort failed\n");
+ return (1);
+ }
+
+ printf("abort-aborted: index %d\n", dummyi);
+ return (0);
+}
+#endif
HCoop / hcoop / debian / courier-authlib.git / blobdiff