| Index: chrome/third_party/hunspell/src/hunspell/hunzip.cxx
|
| ===================================================================
|
| --- chrome/third_party/hunspell/src/hunspell/hunzip.cxx (revision 0)
|
| +++ chrome/third_party/hunspell/src/hunspell/hunzip.cxx (revision 0)
|
| @@ -0,0 +1,196 @@
|
| +#ifndef MOZILLA_CLIENT
|
| +#include <cstdlib>
|
| +#include <cstring>
|
| +#include <cstdio>
|
| +#else
|
| +#include <stdlib.h>
|
| +#include <string.h>
|
| +#include <stdio.h>
|
| +#endif
|
| +
|
| +#include "hunzip.hxx"
|
| +
|
| +#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) {
|
| + bufsiz = 0;
|
| + lastbit = 0;
|
| + inc = 0;
|
| + outc = 0;
|
| + dec = NULL;
|
| + filename = (char *) malloc(strlen(file) + 1);
|
| + if (filename) strcpy(filename, 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;
|
| +
|
| + fin = fopen(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;
|
| +}
|
|
|
| Property changes on: chrome\third_party\hunspell\src\hunspell\hunzip.cxx
|
| ___________________________________________________________________
|
| Added: svn:eol-style
|
| + LF
|
|
|
|
|