diff options
Diffstat (limited to 'plugins/SpellChecker/src/hunspell/hunzip.cxx')
| -rw-r--r-- | plugins/SpellChecker/src/hunspell/hunzip.cxx | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/plugins/SpellChecker/src/hunspell/hunzip.cxx b/plugins/SpellChecker/src/hunspell/hunzip.cxx deleted file mode 100644 index c4c811dcd6..0000000000 --- a/plugins/SpellChecker/src/hunspell/hunzip.cxx +++ /dev/null @@ -1,191 +0,0 @@ -#include "..\commons.h" - -#define CODELEN 65536 -#define BASEBITREC 5000 - -#define UNCOMPRESSED '\002' -#define MAGIC "hz0" -#define MAGIC_ENCRYPT "hz1" -#define MAGICLEN (sizeof(MAGIC) - 1) - -int Hunzip::fail(const char * err, const char * par) { - fprintf(stderr, err, par); - return -1; -} - -Hunzip::Hunzip(const char * file, const char * key) - : fin(NULL) - , bufsiz(0) - , lastbit(0) - , inc(0) - , inbits(0) - , outc(0) - , dec(NULL) -{ - in[0] = out[0] = line[0] = '\0'; - filename = mystrdup(file); - if (getcode(key) == -1) bufsiz = -1; - else bufsiz = getbuf(); -} - -int Hunzip::getcode(const char * key) { - unsigned char c[2]; - int i, j, n, p; - int allocatedbit = BASEBITREC; - const char * enc = key; - - if (!filename) return -1; - - fin = myfopen(filename, "rb"); - if (!fin) return -1; - - // read magic number - if ((fread(in, 1, 3, fin) < MAGICLEN) - || !(strncmp(MAGIC, in, MAGICLEN) == 0 || - strncmp(MAGIC_ENCRYPT, in, MAGICLEN) == 0)) { - return fail(MSG_FORMAT, filename); - } - - // check encryption - if (strncmp(MAGIC_ENCRYPT, in, MAGICLEN) == 0) { - unsigned char cs; - if (!key) return fail(MSG_KEY, filename); - if (fread(&c, 1, 1, fin) < 1) return fail(MSG_FORMAT, filename); - for (cs = 0; *enc; enc++) cs ^= *enc; - if (cs != c[0]) return fail(MSG_KEY, filename); - enc = key; - } else key = NULL; - - // read record count - if (fread(&c, 1, 2, fin) < 2) return fail(MSG_FORMAT, filename); - - if (key) { - c[0] ^= *enc; - if (*(++enc) == '\0') enc = key; - c[1] ^= *enc; - } - - n = ((int) c[0] << 8) + c[1]; - dec = (struct bit *) malloc(BASEBITREC * sizeof(struct bit)); - if (!dec) return fail(MSG_MEMORY, filename); - dec[0].v[0] = 0; - dec[0].v[1] = 0; - - // read codes - for (i = 0; i < n; i++) { - unsigned char l; - if (fread(c, 1, 2, fin) < 2) return fail(MSG_FORMAT, filename); - if (key) { - if (*(++enc) == '\0') enc = key; - c[0] ^= *enc; - if (*(++enc) == '\0') enc = key; - c[1] ^= *enc; - } - if (fread(&l, 1, 1, fin) < 1) return fail(MSG_FORMAT, filename); - if (key) { - if (*(++enc) == '\0') enc = key; - l ^= *enc; - } - if (fread(in, 1, l/8+1, fin) < (size_t) l/8+1) return fail(MSG_FORMAT, filename); - if (key) for (j = 0; j <= l/8; j++) { - if (*(++enc) == '\0') enc = key; - in[j] ^= *enc; - } - p = 0; - for (j = 0; j < l; j++) { - int b = (in[j/8] & (1 << (7 - (j % 8)))) ? 1 : 0; - int oldp = p; - p = dec[p].v[b]; - if (p == 0) { - lastbit++; - if (lastbit == allocatedbit) { - allocatedbit += BASEBITREC; - dec = (struct bit *) realloc(dec, allocatedbit * sizeof(struct bit)); - } - dec[lastbit].v[0] = 0; - dec[lastbit].v[1] = 0; - dec[oldp].v[b] = lastbit; - p = lastbit; - } - } - dec[p].c[0] = c[0]; - dec[p].c[1] = c[1]; - } - return 0; -} - -Hunzip::~Hunzip() -{ - if (dec) free(dec); - if (fin) fclose(fin); - if (filename) free(filename); -} - -int Hunzip::getbuf() { - int p = 0; - int o = 0; - do { - if (inc == 0) inbits = fread(in, 1, BUFSIZE, fin) * 8; - for (; inc < inbits; inc++) { - int b = (in[inc / 8] & (1 << (7 - (inc % 8)))) ? 1 : 0; - int oldp = p; - p = dec[p].v[b]; - if (p == 0) { - if (oldp == lastbit) { - fclose(fin); - fin = NULL; - // add last odd byte - if (dec[lastbit].c[0]) out[o++] = dec[lastbit].c[1]; - return o; - } - out[o++] = dec[oldp].c[0]; - out[o++] = dec[oldp].c[1]; - if (o == BUFSIZE) return o; - p = dec[p].v[b]; - } - } - inc = 0; - } while (inbits == BUFSIZE * 8); - return fail(MSG_FORMAT, filename); -} - -const char * Hunzip::getline() { - char linebuf[BUFSIZE]; - int l = 0, eol = 0, left = 0, right = 0; - if (bufsiz == -1) return NULL; - while (l < bufsiz && !eol) { - linebuf[l++] = out[outc]; - switch (out[outc]) { - case '\t': break; - case 31: { // escape - if (++outc == bufsiz) { - bufsiz = getbuf(); - outc = 0; - } - linebuf[l - 1] = out[outc]; - break; - } - case ' ': break; - default: if (((unsigned char) out[outc]) < 47) { - if (out[outc] > 32) { - right = out[outc] - 31; - if (++outc == bufsiz) { - bufsiz = getbuf(); - outc = 0; - } - } - if (out[outc] == 30) left = 9; else left = out[outc]; - linebuf[l-1] = '\n'; - eol = 1; - } - } - if (++outc == bufsiz) { - outc = 0; - bufsiz = fin ? getbuf(): -1; - } - } - if (right) strcpy(linebuf + l - 1, line + strlen(line) - right - 1); - else linebuf[l] = '\0'; - strcpy(line + left, linebuf); - return line; -} |