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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#if STDC_HEADERS
#include <stdarg.h>
#define VA_START(va_list,var) va_start(va_list,var)
#else
#include <varargs.h>
#define VA_START(va_list,var) va_start(va_list)
#endif
#include <stdio.h>
#include "global.h"
#include "line.h"
void
set_line (struct line *line, char *string)
{
int len;
len = strlen (string);
if (line->alloc <= len)
{
if (len < LINE_MIN)
len = LINE_MIN;
else
len++;
line->alloc = len + 1;
if (line->buf)
line->buf = ck_realloc (line->buf, line->alloc);
else
line->buf = ck_malloc (line->alloc);
}
strcpy (line->buf, string);
}
void
setn_line (struct line *line, char *string, int n)
{
int len = n;
if (line->alloc <= len)
{
if (len < LINE_MIN)
len = LINE_MIN;
else
len++;
line->alloc = len;
line->buf = ck_remalloc (line->buf, line->alloc);
}
bcopy (string, line->buf, n);
line->buf[n] = 0;
}
#define Max(A,B) ((A) > (B) ? (A) : (B))
void
catn_line (struct line *line, char *string, int n)
{
int len = (line->buf ? strlen (line->buf) : 0);
if (line->alloc <= len + n + 1)
{
line->alloc = Max (len + n + 1, LINE_MIN);
line->buf = ck_remalloc (line->buf, line->alloc);
}
if (n)
bcopy (string, line->buf + len, n);
line->buf[len + n] = '\0';
}
void
sprint_line (struct line *line, char * fmt, ...)
{
va_list iggy;
int len;
len = strlen (fmt) + 200;
if (!line->alloc)
{
line->buf = ck_malloc (len);
line->alloc = len;
}
else if (line->alloc < len)
{
line->buf = ck_realloc (line->buf, len);
line->alloc = len;
}
VA_START (iggy, fmt);
vsprintf (line->buf, fmt, iggy);
va_end (iggy);
}
void
splicen_line (struct line * line, char * str, int n, int pos)
{
int old_len = strlen (line->buf);
int len = old_len + n;
if (line->alloc <= len)
{
line->alloc = len;
line->buf = ck_remalloc (line->buf, len + 1);
}
line->buf[len--] = '\0';
--old_len;
while (old_len >= pos)
{
line->buf[len] = line->buf[old_len];
--len;
--old_len;
}
while (n--)
line->buf[pos + n] = str[n];
}
void
edit_line (struct line * line, int begin, int len)
{
int old_len = strlen (line->buf);
int new_len = old_len - len;
while (begin < new_len)
{
line->buf[begin] = line->buf[begin + len];
++begin;
}
line->buf[begin] = '\0';
}
void
free_line (struct line * line)
{
if (line->buf && line->alloc)
free (line->buf);
line->buf = 0;
line->alloc = 0;
}
int
read_line (struct line * line, FILE * fp, int * linec)
{
int pos = 0;
int c = getc (fp);
while ((c != EOF) && (c != '\n'))
{
if (pos + 2 >= line->alloc)
{
line->alloc = (line->alloc ? line->alloc * 2 : 1);
line->buf = ck_remalloc (line->buf, line->alloc);
}
if (c != '\\')
line->buf[pos++] = c;
else
{
int next_c = getc (fp);
if (next_c != '\n')
{
line->buf[pos++] = '\\';
line->buf[pos++] = next_c;
}
/* Else the backslash and newline are discarded from the input. */
else
++*linec;
}
c = getc (fp);
}
if (pos + 1 > line->alloc)
{
++line->alloc;
line->buf = ck_remalloc (line->buf, line->alloc);
}
line->buf[pos] = 0;
if (line->buf[0] || (c != EOF))
{
++*linec;
return 1;
}
else
return 0;
}
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