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#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "def.h"
#include "str.h"
#include "err.h"
#include "mem.h"
#include "csv.h"
BEGIN_C
static int csvlist_makelist (csvlist_t *, long);
END_C
csvlist_t *
csvlist_open (const char *path)
{
csvlist_t *csv_p;
FILE *fp;
char *buffer;
long size;
if (!path)
return NULL;
csv_p = mem_new0 (csvlist_t, 1);
csv_p->path = str_clone ((char *) path, strlen (path));
fp = fopen (path, "rb");
if (!fp)
err_system (path);
fseek (fp, 0L, SEEK_END);
size = ftell (fp);
rewind (fp);
buffer = mem_new (char, size);
if (fread (buffer, size, 1, fp) < size)
{
if (ferror (fp))
err_system ("csv_open");
}
fclose (fp);
csv_p->top_p = buffer;
if (csvlist_makelist (csv_p, size))
{
csvlist_close (csv_p);
return NULL;
}
return csv_p;
}
void
csvlist_close (csvlist_t *csv_p)
{
if (csv_p)
{
if (csv_p->path)
mem_free (csv_p->path);
if (csv_p->top_p)
mem_free (csv_p->top_p);
if (csv_p->list)
mem_free (csv_p->list);
mem_free (csv_p);
}
return;
}
int
csvlist_search_keyword (csvlist_t *csv_p, int pos, const char *keyword)
{
char **list = csv_p->list;
int i;
for (i = pos; i < csv_p->lnum; i ++)
{
if (!strcmp (list[i], keyword))
return i;
}
return -1;
}
char *
csvlist_get_word (csvlist_t *csv_p, int pos)
{
if (pos < 0 || pos > csv_p->lnum)
return NULL;
return csv_p->list[pos];
}
int
csvlist_get_max (csvlist_t *csv_p)
{
return csv_p->lnum;
}
static int
csvlist_makelist (csvlist_t *csv_p, long size)
{
char *from_buf = csv_p->top_p;
char *to_buf = from_buf;
char **list;
int list_max, list_num;
long from_point, to_point;
bool_t quote_in;
list_max = 16; /* Initial value = 16 */
list = mem_new (char *, list_max);
list_num = 1;
list[0] = to_buf;
to_point = 0;
quote_in = 0;
for (from_point = 0; from_point < size; from_point ++)
{
if (!quote_in
&& from_buf[from_point] == '#') /* In comment */
{
from_point += strcspn (from_buf + from_point, "\n\0");
continue;
}
else if (!quote_in
&& (from_buf[from_point] == '\n' || from_buf[from_point] == ','))
{
to_buf[to_point++] = '\0';
list[list_num++] = to_buf + to_point;
if (list_num >= list_max)
{
list_max *= 2;
list = mem_renew (char *, list, list_max);
}
}
else if (from_buf[from_point] == '"')
{
quote_in ^= 1;
continue;
}
else
{
to_buf[to_point++] = from_buf[from_point];
}
}
to_buf = mem_renew (char, to_buf, to_point);
list = mem_renew (char *, list, list_num + 1);
csv_p->top_p = to_buf;
csv_p->size = to_point;
csv_p->list = list;
csv_p->lnum = list_num;
return 0;
}
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