#include <errno.h>
#include "as.h"
#include "input-file.h"
#include "sb.h"
#include "listing.h"
#define BEFORE_STRING ("\n")
#define AFTER_STRING ("\0")
#define BEFORE_SIZE (1)
#define AFTER_SIZE (1)
static char *buffer_start;
static char *partial_where;
static int partial_size;
static char save_source[AFTER_SIZE];
static unsigned int buffer_length;
static int sb_index = -1;
static sb from_sb;
static int from_sb_is_expansion = 1;
int macro_nest;
static char *physical_input_file;
static char *logical_input_file;
typedef unsigned int line_numberT;
static line_numberT physical_input_line;
static int logical_input_line;
struct input_save {
char * buffer_start;
char * partial_where;
int partial_size;
char save_source[AFTER_SIZE];
unsigned int buffer_length;
char * physical_input_file;
char * logical_input_file;
line_numberT physical_input_line;
int logical_input_line;
int sb_index;
sb from_sb;
int from_sb_is_expansion;
struct input_save * next_saved_file;
char * input_file_save;
char * saved_position;
};
static struct input_save *input_scrub_push (char *saved_position);
static char *input_scrub_pop (struct input_save *arg);
static void as_1_char (unsigned int c, FILE * stream);
static struct input_save *next_saved_file;
static struct input_save *
input_scrub_push (char *saved_position)
{
register struct input_save *saved;
saved = (struct input_save *) xmalloc (sizeof *saved);
saved->saved_position = saved_position;
saved->buffer_start = buffer_start;
saved->partial_where = partial_where;
saved->partial_size = partial_size;
saved->buffer_length = buffer_length;
saved->physical_input_file = physical_input_file;
saved->logical_input_file = logical_input_file;
saved->physical_input_line = physical_input_line;
saved->logical_input_line = logical_input_line;
saved->sb_index = sb_index;
saved->from_sb = from_sb;
saved->from_sb_is_expansion = from_sb_is_expansion;
memcpy (saved->save_source, save_source, sizeof (save_source));
saved->next_saved_file = next_saved_file;
saved->input_file_save = input_file_push ();
input_file_begin ();
logical_input_line = -1;
logical_input_file = (char *) NULL;
buffer_length = input_file_buffer_size ();
sb_index = -1;
buffer_start = xmalloc ((BEFORE_SIZE + buffer_length + buffer_length + AFTER_SIZE));
memcpy (buffer_start, BEFORE_STRING, (int) BEFORE_SIZE);
return saved;
}
static char *
input_scrub_pop (struct input_save *saved)
{
char *saved_position;
input_scrub_end ();
input_file_pop (saved->input_file_save);
saved_position = saved->saved_position;
buffer_start = saved->buffer_start;
buffer_length = saved->buffer_length;
physical_input_file = saved->physical_input_file;
logical_input_file = saved->logical_input_file;
physical_input_line = saved->physical_input_line;
logical_input_line = saved->logical_input_line;
sb_index = saved->sb_index;
from_sb = saved->from_sb;
from_sb_is_expansion = saved->from_sb_is_expansion;
partial_where = saved->partial_where;
partial_size = saved->partial_size;
next_saved_file = saved->next_saved_file;
memcpy (save_source, saved->save_source, sizeof (save_source));
free (saved);
return saved_position;
}
void
input_scrub_begin (void)
{
know (strlen (BEFORE_STRING) == BEFORE_SIZE);
know (strlen (AFTER_STRING) == AFTER_SIZE
|| (AFTER_STRING[0] == '\0' && AFTER_SIZE == 1));
input_file_begin ();
buffer_length = input_file_buffer_size ();
buffer_start = xmalloc ((BEFORE_SIZE + buffer_length + buffer_length + AFTER_SIZE));
memcpy (buffer_start, BEFORE_STRING, (int) BEFORE_SIZE);
logical_input_line = -1;
logical_input_file = (char *) NULL;
physical_input_file = NULL;
next_saved_file = NULL;
do_scrub_begin (flag_m68k_mri);
}
void
input_scrub_end (void)
{
if (buffer_start)
{
free (buffer_start);
buffer_start = 0;
input_file_end ();
}
}
char *
input_scrub_new_file (char *filename)
{
input_file_open (filename, !flag_no_comments);
physical_input_file = filename[0] ? filename : _("{standard input}");
physical_input_line = 0;
partial_size = 0;
return (buffer_start + BEFORE_SIZE);
}
char *
input_scrub_include_file (char *filename, char *position)
{
next_saved_file = input_scrub_push (position);
return input_scrub_new_file (filename);
}
void
input_scrub_include_sb (sb *from, char *position, int is_expansion)
{
if (macro_nest > max_macro_nest)
as_fatal (_("macros nested too deeply"));
++macro_nest;
#ifdef md_macro_start
if (is_expansion)
{
md_macro_start ();
}
#endif
next_saved_file = input_scrub_push (position);
sb_new (&from_sb);
from_sb_is_expansion = is_expansion;
if (from->len >= 1 && from->ptr[0] != '\n')
{
sb_add_char (&from_sb, '\n');
}
sb_add_sb (&from_sb, from);
sb_index = 1;
logical_input_line = next_saved_file->logical_input_line;
logical_input_file = next_saved_file->logical_input_file;
}
void
input_scrub_close (void)
{
input_file_close ();
}
char *
input_scrub_next_buffer (char **bufp)
{
register char *limit;
if (sb_index >= 0)
{
if (sb_index >= from_sb.len)
{
sb_kill (&from_sb);
if (from_sb_is_expansion
)
{
cond_finish_check (macro_nest);
#ifdef md_macro_end
md_macro_end ();
#endif
}
--macro_nest;
partial_where = NULL;
if (next_saved_file != NULL)
*bufp = input_scrub_pop (next_saved_file);
return partial_where;
}
partial_where = from_sb.ptr + from_sb.len;
partial_size = 0;
*bufp = from_sb.ptr + sb_index;
sb_index = from_sb.len;
return partial_where;
}
*bufp = buffer_start + BEFORE_SIZE;
if (partial_size)
{
memcpy (buffer_start + BEFORE_SIZE, partial_where,
(unsigned int) partial_size);
memcpy (buffer_start + BEFORE_SIZE, save_source, AFTER_SIZE);
}
limit = input_file_give_next_buffer (buffer_start
+ BEFORE_SIZE
+ partial_size);
if (limit)
{
register char *p;
for (p = limit - 1; *p != '\n'; --p)
;
++p;
while (p <= buffer_start + BEFORE_SIZE)
{
int limoff;
limoff = limit - buffer_start;
buffer_length += input_file_buffer_size ();
buffer_start = xrealloc (buffer_start,
(BEFORE_SIZE
+ 2 * buffer_length
+ AFTER_SIZE));
*bufp = buffer_start + BEFORE_SIZE;
limit = input_file_give_next_buffer (buffer_start + limoff);
if (limit == NULL)
{
as_warn (_("partial line at end of file ignored"));
partial_where = NULL;
if (next_saved_file)
*bufp = input_scrub_pop (next_saved_file);
return NULL;
}
for (p = limit - 1; *p != '\n'; --p)
;
++p;
}
partial_where = p;
partial_size = limit - p;
memcpy (save_source, partial_where, (int) AFTER_SIZE);
memcpy (partial_where, AFTER_STRING, (int) AFTER_SIZE);
}
else
{
partial_where = 0;
if (partial_size > 0)
{
as_warn (_("partial line at end of file ignored"));
}
LISTING_EOF ();
if (next_saved_file)
{
*bufp = input_scrub_pop (next_saved_file);
}
}
return (partial_where);
}
int
seen_at_least_1_file (void)
{
return (physical_input_file != NULL);
}
void
bump_line_counters (void)
{
if (sb_index < 0)
{
++physical_input_line;
if (logical_input_line >= 0)
++logical_input_line;
}
}
int
new_logical_line (char *fname,
int line_number)
{
if (line_number >= 0)
logical_input_line = line_number;
else if (line_number == -2 && logical_input_line > 0)
--logical_input_line;
if (fname
&& (logical_input_file == NULL
|| strcmp (logical_input_file, fname)))
{
logical_input_file = fname;
return 1;
}
else
return 0;
}
void
as_where (char **namep, unsigned int *linep)
{
if (logical_input_file != NULL
&& (linep == NULL || logical_input_line >= 0))
{
*namep = logical_input_file;
if (linep != NULL)
*linep = logical_input_line;
}
else if (physical_input_file != NULL)
{
*namep = physical_input_file;
if (linep != NULL)
*linep = physical_input_line;
}
else
{
*namep = 0;
if (linep != NULL)
*linep = 0;
}
}
void
as_howmuch (FILE *stream )
{
register char *p;
for (p = input_line_pointer - 1; *p != '\n'; --p)
{
}
++p;
for (; p <= input_line_pointer; p++)
{
as_1_char ((unsigned char) *p, stream);
}
}
static void
as_1_char (unsigned int c, FILE *stream)
{
if (c > 127)
{
(void) putc ('%', stream);
c -= 128;
}
if (c < 32)
{
(void) putc ('^', stream);
c += '@';
}
(void) putc (c, stream);
}