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/*
* sortdic.c - sort a dictionary
*
* it does same as "sort -s +0 -1 | uniq | gawk -e '{printf("%s\0",$$0)}'"
*
* by A.Kitauchi <akira-k@is.aist-nara.ac.jp>, Oct. 1996
*
*/
#include <stdio.h>
#include <string.h>
#include "chadic.h"
#define LINEMAX 8192
typedef struct _line_info {
long ptr;
char *midasi;
} line_info;
#define BLOCK_SIZE (1024 * 256)
#define BLOCK_MAX 1024
static char *buffer_ptr[BLOCK_MAX];
static int buffer_ptr_num = 0;
static int buffer_idx = BLOCK_SIZE;
static char *cha_malloc_char(size)
int size;
{
if (buffer_idx + size >= BLOCK_SIZE) {
if (buffer_ptr_num == BLOCK_MAX)
cha_exit(1, "Can't allocate memory");
buffer_ptr[buffer_ptr_num++] = cha_malloc(BLOCK_SIZE);
buffer_idx = 0;
}
buffer_idx += size;
return buffer_ptr[buffer_ptr_num - 1] + buffer_idx - size;
}
static int ustrcmp(s1, s2)
unsigned char *s1, *s2;
{
for (; *s1 && *s1 == *s2; s1++, s2++);
return (int)(*s1 - *s2);
}
static int midasi_compare(l1, l2)
line_info *l1, *l2;
{
#if 0
return ustrcmp(l1->midasi, l2->midasi) || (int)(l1->ptr - l2->ptr);
#else
int rc;
rc = ustrcmp(l1->midasi, l2->midasi);
if (rc)
return rc;
else
return (int)(l1->ptr - l2->ptr);
#endif
}
static void sortdic(infile, outfile)
char *infile, *outfile;
{
FILE *fpi, *fpo;
struct stat st;
line_info *line;
int nline, l;
char buf[LINEMAX], *filebuf, *fb, *s;
fpi = cha_fopen(infile, "r", 1);
fpo = outfile ? cha_fopen(outfile, "w", 1) : stdout;
fstat(fileno(fpi), &st);
#if 1
fb = filebuf = malloc(st.st_size);
#else
fb = filebuf = NULL;
#endif
if (filebuf != NULL) {
#if 1
fprintf(stderr, "reading... ");
#endif
/* note: sizeof(buf) is not incorrect */
for (nline = 0; fgets(fb, sizeof(buf), fpi) != NULL; nline++)
fb = (char *)memchr(fb, '\n', sizeof(buf)) + 1;
} else {
/* cannot malloc */
#if 1
fprintf(stderr, "counting lines... ");
#endif
for (nline = 0; fgets(buf, sizeof(buf), fpi) != NULL; nline++);
}
#if 1
fprintf(stderr, "(%d lines) ", nline);
#endif
line = (line_info *)cha_malloc(sizeof(line_info) * nline);
if (filebuf) {
fb = filebuf;
for (l = 0; l < nline; l++) {
line[l].midasi = fb;
line[l].ptr = l;
#ifndef VGRAM
if ((s = strchr(fb, '\t')) == NULL)
cha_exit(1, "%s:%d: does not contain TAB characters.", infile, l + 1);
*s = '\0';
#endif
fb = (char *)memchr(fb, '\n', sizeof(buf)) + 1;
}
} else {
/* cannot malloc */
#if 1
fprintf(stderr, "reading... ");
#endif
rewind(fpi);
for (l = 0; l < nline; l++) {
line[l].ptr = ftell(fpi);
fgets(buf, sizeof(buf), fpi);
#ifndef VGRAM
if ((s = strchr(buf, '\t')) == NULL)
cha_exit(1, "%s:%d: does not contain TAB characters.", infile, l + 1);
*s = '\0';
#endif
line[l].midasi = cha_malloc_char(strlen(buf) + 1);
strcpy(line[l].midasi, buf);
}
}
#if 1
fprintf(stderr, "sorting... ");
#endif
qsort(line, nline, sizeof(line_info), (int (*)())midasi_compare);
#if 1
fprintf(stderr, "writing... ");
#endif
if (filebuf) {
char *b, *pre = "";
int len;
for (l = 0; l < nline; l++) {
b = line[l].midasi;
#ifndef VGRAM
b[strlen(b)] = '\t';
#endif
len = (char *)memchr(b, '\n', sizeof(buf)) + 1 - b;
if (memcmp(pre, b, len)) {
#ifdef VGRAM
fwrite(b, len, 1, fpo);
#else
fwrite(b, len-1, 1, fpo);
fputc('\0', fpo);
#endif
pre = b;
}
}
} else {
char prebuf[LINEMAX];
int len;
prebuf[0] = '\0';
for (l = 0; l < nline; l++) {
fseek(fpi, line[l].ptr, SEEK_SET);
fgets(buf, sizeof(buf), fpi);
len = (char *)memchr(buf, '\n', sizeof(buf)) + 1 - buf;
if (memcmp(prebuf, buf, len)) {
#ifdef VGRAM
fwrite(buf, len, 1, fpo);
#else
fwrite(buf, len-1, 1, fpo);
fputc('\0', fpo);
#endif
memcpy(prebuf, buf, len);
}
}
}
fclose(fpi);
fclose(fpo);
fprintf(stderr, "done.\n");
}
int main(argc, argv)
int argc;
char *argv[];
{
time_t t0, t1;
FILE *fpi, *fpo;
if (argc < 2) {
fprintf(stderr, "usage: sortdic input-file [ output-file ]\n");
exit(1);
}
set_progpath(argv[0]);
time(&t0);
sortdic(argv[1], argv[2]);
time(&t1);
fprintf(stderr, "processing time: %d sec\n", (int)(t1 - t0));
return 0;
}
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