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/*
C H A N G E F I . C
*/
#include "iccomp.h"
#define N_FILES 11
static struct
{
int
former_linenr;
char
*fname;
}
stack[N_FILES];
static int
filenames_len,
sp = N_FILES;
void change_file(s)
char
*s; /* name of source file to open */
{
register int
slen;
if (*s) /* any filename ? */
{
if (!sp--) /* no more entries ? */
error("Over 10 included files");
stack[sp].fname = xstrdup(s); /* save the name of the file */
stack[sp].former_linenr = yylineno; /* save the line number */
filenames = xrealloc(filenames, /* room for new filename */
filenames_len +
(slen = strlen(s)) +
2);
/* append name */
sprintf(filenames + filenames_len, "%s\n", s);
filenames_len += slen + 1; /* new length of string */
yylineno = 0; /* start at new file */
}
else
{
if (sp == N_FILES - 1)
error("[%s] Line %d: Include file stack empty", source_name,
yylineno);
free(stack[sp].fname);
yylineno = stack[sp].former_linenr - 1;
sp++; /* free stack element */
}
source_name = stack[sp].fname;
}
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