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csv.c
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csv.c
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#ifndef NO_POSIX_SOURCE
#undef _POSIX_SOURCE
#define _POSIX_SOURCE 1
#undef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 2
#endif
#include <assert.h>
#include <ctype.h>
#include <stdlib.h>
#ifdef OLD_REALLOC
#define realloc(s,l) myrealloc(s,l)
#endif
#ifdef DMALLOC
#include "dmalloc.h"
#endif
#include "csv.h"
static int semicol=0;
/* csv_setopt -- set language */ /*{{{C}}}*//*{{{*/
void csv_setopt(int sem)
{
semicol=sem;
}
/*}}}*/
#if 0
/* csv_date -- convert string "year<sep>month<sep>day<sep>" to date */ /*{{{*/
static struct CSV_Date csv_date(const char *s, const char **end)
{
struct CSV_Date date;
assert(s!=(const char*)0);
assert(end!=(const char**)0);
*end=s;
if (*s=='"')
{
++s;
if (isdigit(*s))
{
for (date.year=0; isdigit(*s); date.year=10*date.year+(*s-'0'),++s);
if (*s)
{
++s;
if (isdigit(*s))
{
for (date.month=0; isdigit(*s); date.month=10*date.month+(*s-'0'),++s);
if (*s)
{
++s;
if (isdigit(*s))
{
for (date.day=0; isdigit(*s); date.day=10*date.day+(*s-'0'),++s);
if (*s=='"')
{
++s;
*end=s;
}
}
}
}
}
}
}
return date;
}
/*}}}*/
#endif
/* csv_separator -- convert string \t to nothing */ /*{{{*/
void csv_separator(const char *s, const char **end)
{
assert(s!=(const char*)0);
assert(end!=(const char**)0);
*end=s+(*s=='\t' || (semicol && *s==';') || (!semicol && *s==','));
}
/*}}}*/
/* csv_long -- convert string [0[x]]12345 to long */ /*{{{*/
long csv_long(const char *s, const char **end)
{
long value;
const char *t;
assert(s!=(const char*)0);
assert(end!=(const char**)0);
if (*s=='\t') { *end=s; return 0L; };
value=strtol(s,(char**)end,0);
if (s!=*end)
{
t=*end; csv_separator(t,end);
if (t!=*end || *t=='\0' || *t=='\n') return value;
}
*end=s; return 0L;
}
/*}}}*/
/* csv_double -- convert string 123.4e5 to double */ /*{{{*/
double csv_double(const char *s, const char **end)
{
double value;
const char *t;
assert(s!=(const char*)0);
assert(end!=(const char**)0);
if (*s=='\t') { *end=s; return 0.0; };
value=strtod(s,(char**)end);
if (s!=*end)
{
t=*end; csv_separator(t,end);
if (t!=*end || *t=='\0' || *t=='\n') return value;
}
*end=s; return 0.0;
}
/*}}}*/
/* csv_string -- convert almost any string to string */ /*{{{*/
char *csv_string(const char *s, const char **end)
{
static char *string;
static int strings,stringsz;
assert(s!=(const char*)0);
assert(end!=(const char**)0);
strings=0;
stringsz=0;
string=(char*)0;
if (!isprint((int)*s) || (!semicol && *s==',') || (semicol && *s==';')) return (char*)0;
if (*s=='"')
{
++s;
while (*s!='\0' && *s!='\n' && *s!='"')
{
if ((strings+2)>=stringsz)
{
string=realloc(string,stringsz+=32);
}
string[strings]=*s;
++strings;
++s;
}
if (*s=='"') ++s;
}
else
{
while (*s!='\0' && *s!='\n' && *s!='\t' && ((!semicol && *s!=',') || (semicol && *s!=';')))
{
if ((strings+2)>=stringsz)
{
string=realloc(string,stringsz+=32);
}
string[strings]=*s;
++strings;
++s;
}
}
string[strings]='\0';
*end=s;
csv_separator(s,end);
return string;
}
/*}}}*/