thodg/libiconv/src/gentranslit.c

Tag - branch -master- tag -v1.9.2v1.9.1v1.9v1.8v1.7v1.6.1v1.6v1.5.1v1.5v1.4v1.3v1.2v1.18v1.17v1.16v1.15v1.14v1.13.1v1.13v1.12v1.11.1v1.11v1.10v1.1v1.0v0.3libcharset-1.1clisp-2.28-2002-03-03clisp-2.27-2001-07-17clisp-2.26-2001-05-23clisp-2.25.1-2001-04-061.11.x-branchpoint

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• Hash : 00e960fc
  Author :
  Date : 2000-01-04T21:56:56
  

  Upgrade to libiconv-1.0.
  

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• src/gentranslit.c

• /*
   * Generates a table of small strings, used for transliteration, from a table
   * containing lines of the form
   *   Unicode <tab> iso-8859-1 replacement <tab> # comment
   */
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <stdbool.h>
  
  int main (int argc, char *argv[])
  {
    unsigned char data[0x100000];
    int uni2index[0x10000];
    int index;
  
    if (argc != 1)
      exit(1);
  
    printf("\n");
    printf("/*\n");
    printf(" * Transliteration table\n");
    printf(" */\n");
    printf("\n");
    {
      int c;
      int j;
      for (j = 0; j < 0x10000; j++)
        uni2index[j] = -1;
      index = 0;
      for (;;) {
        c = getc(stdin);
        if (c == EOF)
          break;
        if (c == '#') {
          do { c = getc(stdin); } while (!(c == EOF || c == '\n'));
          continue;
        }
        ungetc(c,stdin);
        if (scanf("%x",&j) != 1)
          exit(1);
        c = getc(stdin);
        if (c != '\t')
          exit(1);
        for (;;) {
          c = getc(stdin);
          if (c == EOF || c == '\n')
            exit(1);
          if (c == '\t')
            break;
          if (uni2index[j] < 0) {
            uni2index[j] = index;
            data[index++] = 0;
          }
          data[index++] = (unsigned char) c;
        }
        data[uni2index[j]] = index - uni2index[j] - 1;
        do { c = getc(stdin); } while (!(c == EOF || c == '\n'));
      }
    }
    printf("static const unsigned char translit_data[%d] = {",index);
    {
      int i;
      for (i = 0; i < index; i++) {
        if (data[i] < 32)
          printf("\n %3d,",data[i]);
        else if (data[i] == '\'')
          printf("'\\'',");
        else
          printf(" '%c',",data[i]);
      }
      printf("\n};\n");
    }
    printf("\n");
    {
      bool pages[0x100];
      int line[0x2000];
      int tableno;
      struct { int minline; int maxline; int usecount; const char* suffix; } tables[0x2000];
      int i, j, p, j1, j2, t;
  
      for (p = 0; p < 0x100; p++)
        pages[p] = false;
      for (j = 0; j < 0x10000; j++)
        if (uni2index[j] >= 0)
          pages[j>>8] = true;
      for (j1 = 0; j1 < 0x2000; j1++) {
        bool all_invalid = true;
        for (j2 = 0; j2 < 8; j2++) {
          j = 8*j1+j2;
          if (uni2index[j] >= 0)
            all_invalid = false;
        }
        if (all_invalid)
          line[j1] = -1;
        else
          line[j1] = 0;
      }
      tableno = 0;
      for (j1 = 0; j1 < 0x2000; j1++) {
        if (line[j1] >= 0) {
          if (tableno > 0
              && ((j1 > 0 && line[j1-1] == tableno-1)
                  || ((tables[tableno-1].maxline >> 5) == (j1 >> 5)
                      && j1 - tables[tableno-1].maxline <= 8))) {
            line[j1] = tableno-1;
            tables[tableno-1].maxline = j1;
          } else {
            tableno++;
            line[j1] = tableno-1;
            tables[tableno-1].minline = tables[tableno-1].maxline = j1;
          }
        }
      }
      for (t = 0; t < tableno; t++) {
        tables[t].usecount = 0;
        j1 = 8*tables[t].minline;
        j2 = 8*(tables[t].maxline+1);
        for (j = j1; j < j2; j++)
          if (uni2index[j] >= 0)
            tables[t].usecount++;
      }
      for (t = 0, p = -1, i = 0; t < tableno; t++) {
        if (tables[t].usecount > 1) {
          char* s;
          if (p == tables[t].minline >> 5) {
            s = (char*) malloc(5+1);
            sprintf(s, "%02x_%d", p, ++i);
          } else {
            p = tables[t].minline >> 5;
            s = (char*) malloc(2+1);
            sprintf(s, "%02x", p);
          }
          tables[t].suffix = s;
        } else
          tables[t].suffix = NULL;
      }
      {
        p = -1;
        for (t = 0; t < tableno; t++)
          if (tables[t].usecount > 1) {
            p = 0;
            printf("static const short translit_page%s[%d] = {\n", tables[t].suffix, 8*(tables[t].maxline-tables[t].minline+1));
            for (j1 = tables[t].minline; j1 <= tables[t].maxline; j1++) {
              if ((j1 % 0x20) == 0 && j1 > tables[t].minline)
                printf("  /* 0x%04x */\n", 8*j1);
              printf(" ");
              for (j2 = 0; j2 < 8; j2++) {
                j = 8*j1+j2;
                printf(" %3d,", uni2index[j]);
              }
              printf(" /* 0x%02x-0x%02x */\n", 8*(j1 % 0x20), 8*(j1 % 0x20)+7);
            }
            printf("};\n");
          }
        if (p >= 0)
          printf("\n");
      }
      printf("#define translit_index(wc) \\\n  (");
      for (j1 = 0; j1 < 0x2000;) {
        t = line[j1];
        for (j2 = j1; j2 < 0x2000 && line[j2] == t; j2++);
        if (t >= 0) {
          if (j1 != tables[t].minline) abort();
          if (j2 > tables[t].maxline+1) abort();
          j2 = tables[t].maxline+1;
        }
        if (t == -1) {
        } else {
          if (t >= 0 && tables[t].usecount == 0) abort();
          if (t >= 0 && tables[t].usecount == 1) {
            if (j2 != j1+1) abort();
            for (j = 8*j1; j < 8*j2; j++)
              if (uni2index[j] >= 0) {
                printf("wc == 0x%04x ? %d", j, uni2index[j]);
                break;
              }
          } else {
            if (j1 == 0) {
              printf("wc < 0x%04x", 8*j2);
            } else {
              printf("wc >= 0x%04x && wc < 0x%04x", 8*j1, 8*j2);
            }
            printf(" ? translit_page%s[wc", tables[t].suffix);
            if (tables[t].minline > 0)
              printf("-0x%04x", 8*j1);
            printf("]");
          }
          printf(" : \\\n   ");
        }
        j1 = j2;
      }
      printf("-1)\n");
    }
  
    fflush(stdout);
    if (ferror(stdout))
      exit(1);
    exit(0);
  }
  

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