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io.c
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io.c
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#include "ptoc.h"
#include <errno.h>
#include <ctype.h>
#define IO_OK 0
#define IO_ERROR errno
#define IO_EOF -1
#define IO_FORMAT_ERROR -2
#define input_error(f) \
(ferror(f) ? IO_ERROR : feof(f) ? IO_EOF : IO_FORMAT_ERROR)
#define Ok 0
#define TRUNCATE_FILE_ON_REWRITE 1
integer ioresult; /* Turbo Pascal IO operation completion status */
enum file_open_mode {
seek_mode = 0x001,
append_mode = 0x002,
rd_mode = 0x004,
wr_mode = 0x008,
rdwr_mode = 0x00C,
trunc_mode = 0x010,
nocr_mode = 0x020,
bin_mode = 0x040,
shr_mode = 0x080,
wal_mode = 0x100,
dlk_mode = 0x200,
tmp_mode = 0x400,
buf_mode = 0x800
};
struct {
char* option;
int flag;
} open_mode_decode[] = {
{ "seek", seek_mode },
{ "apd", append_mode },
{ "ro", rd_mode },
{ "rw", rdwr_mode },
{ "nocr", nocr_mode },
{ "shr", shr_mode },
{ "bin", bin_mode },
{ "dlk", dlk_mode },
{ "wal", wal_mode },
{ "temp", tmp_mode },
{ "buff", buf_mode },
{ NULL, 0}
};
enum file_state {fs_record_defined = 1, fs_next_pos = 2, fs_ignore_error = 4};
text_descriptor input;
text_descriptor output;
int paramcount;
char const* const* param_array;
boolean directvideo;
void (*exitproc)(void);
static void pio_exit_handler(void)
{
if (exitproc) {
(*exitproc)();
}
}
void pio_initialize(int argc, char const* argv[])
{
input.desc.f = stdin;
output.desc.f = stdout;
paramcount = argc-1;
param_array = argv;
atexit(pio_exit_handler);
}
new_line_marker NL;
boolean pio_ignore_error;
static void handle_error(file_descriptor* fd)
{
if (fd->error != IO_OK
&& !(fd->state & fs_ignore_error)
&& !pio_ignore_error)
{
if (fd->error == IO_FORMAT_ERROR) {
fprintf(stderr, "IO: input format error in file '%s'\n",
fd->name ? fd->name : "input");
} else if (fd->error == IO_EOF) {
fprintf(stderr, "IO: access beyond end of file '%s'\n",
fd->name ? fd->name : "input");
} else {
if (fd->name) {
fprintf(stderr, "IO: file '%s' ", fd->name);
perror("");
} else {
perror("IO");
}
}
exit(2);
}
if (fd->error != IO_OK && fd->error != IO_FORMAT_ERROR
&& fd->error != IO_EOF && fd->f != NULL)
{
clearerr(fd->f);
}
}
static int parse_options(char const* options,
char* new_file_name,
char* extension)
{
int i;
int mode = 0;
enum { st_start, st_file_name, st_extension } state = st_start;
char* np; /* pointer to the end of file name */
char* ep; /* pointer to the end of file extension */
if (options == NULL) return 0;
np = new_file_name + strlen(new_file_name);
ep = extension + strlen(extension);
parse_options:
while (*options != '\0') {
switch(*options) {
case '/':
state = st_start;
options += 1;
for (i = 0; open_mode_decode[i].option != NULL; i++) {
char *s = open_mode_decode[i].option;
const char* p = options;
while( *s != 0 && *s == tolower(*(unsigned char*)p)) {
s += 1, p += 1;
}
if (*s == 0) {
int flag = open_mode_decode[i].flag;
if (flag == tmp_mode) {
mode |= flag;
tmpnam(new_file_name);
np += strlen (new_file_name);
} else if(flag == buf_mode) {
if (*p == ':') {
while(isdigit(*(unsigned char*)++p));
}
} else {
mode |= flag;
}
options = p;
goto parse_options;
}
}
continue;
case ' ':
options += 1;
continue;
case '.':
if (state == st_start) {
state = st_extension;
}
default:
if (state == st_extension) {
*ep++ = *options++;
} else {
state = st_file_name;
*np++ = *options++;
}
}
}
*ep = '\0';
*np = '\0';
return mode;
}
#define MAX_OPTIONS 1024
#define MAX_FILE_NAME 1024
#define MAX_EXTENSION 8
/* Ouput:
* -1 if error (file not opened)
* size of file (in 512 byte blocks), else
*/
static integer pio_open_status(file_descriptor* fd)
{
if (fd->f != NULL) {
fpos_t pos;
long length;
fgetpos(fd->f, &pos);
fseek(fd->f, 0, SEEK_END);
length = ftell(fd->f);
fsetpos(fd->f, &pos);
return (length + 511) / 512;
}
return -1;
}
static void open_file(file_descriptor* fd, const char* file_name,
const char* options, integer* error_code,
int mode, size_t record_size)
{
char new_file_name[MAX_FILE_NAME];
char suffix[MAX_EXTENSION];
char* mode_str;
pio_close_file(fd);
new_file_name[0] = '\0';
suffix[0] = '\0';
mode |= parse_options(options, new_file_name, suffix)
| parse_options(file_name, new_file_name, suffix);
strcat(new_file_name, suffix);
if (mode & seek_mode) mode |= rd_mode|wr_mode;
if (record_size > 1) mode |= bin_mode;
if (mode & bin_mode) {
if ((mode & (append_mode|rd_mode)) == (append_mode|rd_mode))
mode_str = "ab+";
else if (mode & append_mode) mode_str = "ab";
else if ((mode & rdwr_mode) == rd_mode) mode_str = "rb";
else if ((mode & rdwr_mode) == wr_mode) mode_str = "wb";
else if (mode & trunc_mode) mode_str = "wb+";
else mode_str = "rb+";
} else {
if ((mode & (append_mode|rd_mode)) == (append_mode|rd_mode))
mode_str = "a+";
else if (mode & append_mode) mode_str = "a";
else if ((mode & rdwr_mode) == rd_mode) mode_str = "r";
else if ((mode & rdwr_mode) == wr_mode) mode_str = "w";
else if (mode & trunc_mode) mode_str = "w+";
else mode_str = "r+";
}
fd->mode = mode;
fd->state &= ~(fs_record_defined|fs_next_pos);
fd->name = new_file_name;
fd->f = fopen(new_file_name, mode_str);
if (mode & tmp_mode) {
remove(new_file_name);
}
if (fd->f == NULL) {
ioresult = fd->error = IO_ERROR;
if (error_code == NULL) {
handle_error(fd);
}
fd->name = NULL;
} else {
ioresult = fd->error = IO_OK;
fd->name = strdup(new_file_name);
}
if (error_code != NULL) {
*error_code = pio_open_status(fd);
}
}
void pio_rewrite_file(file_descriptor* fd, size_t record_size,
const char* file_name, const char* options,
integer* error_code)
{
if (file_name == NULL) {
if (fd == &output.desc) {
/* Oregon Pascal-2 extension */
if (error_code) {
boolean ignore_error = pio_ignore_error;
pio_ignore_error = true;
cwrite("\n");
pio_ignore_error = ignore_error;
*error_code = pio_open_status(fd);
} else {
cwrite("\n");
}
} else {
if (fd->f == NULL) {
char new_file_name[MAX_FILE_NAME];
int mode = wr_mode|trunc_mode;
if (fd->name != NULL) {
strcpy(new_file_name, fd->name);
} else {
mode |= tmp_mode|rd_mode;
tmpnam(new_file_name);
}
open_file(fd, new_file_name, options, error_code, mode,
record_size);
} else {
#if TRUNCATE_FILE_ON_REWRITE
if ((fd->f = freopen(fd->name, (fd->mode & bin_mode)
? "wb+" : "w+", fd->f)) == NULL)
#else
if (fseek(fd->f, 0, 0) != Ok)
#endif
{
ioresult = fd->error = IO_ERROR;
if (error_code == NULL) {
handle_error(fd);
} else {
*error_code = IO_ERROR;
}
} else {
ioresult = fd->error = IO_OK;
}
}
}
} else {
open_file(fd, file_name, options, error_code, wr_mode|trunc_mode,
record_size);
}
}
#ifndef _WIN32
static int stricmp(char const* a, char const* b)
{
while (*b != 0) {
int diff = tolower(*(unsigned char*)a) - tolower(*(unsigned char*)b);
if (diff != 0) {
return diff;
}
a += 1;
b += 1;
}
return *(unsigned char*)a;
}
#endif
void pio_open_file(file_descriptor* fd, size_t record_size,
const char* file_name, const char* history,
integer* error_code)
{
char const* name = file_name;
int mode;
int error;
char buf[MAX_FILE_NAME];
if (stricmp(name, "-stdin") == 0) {
fd->f = stdin;
name = "stdin";
mode = rd_mode;
goto complete_open;
}
if (stricmp(name, "-stdout") == 0) {
fd->f = stdout;
name = "stdout";
mode = wr_mode;
goto complete_open;
}
if (*name == '^') {
int n;
if (sscanf(name+1, "%d", &n) != 1 || n > paramcount) {
error = file_not_specified;
goto handle_error;
}
name = param_array[n];
} else if (*name == '*') {
printf("%s", name+1);
if (scanf("%s", buf) != 1) {
error = file_not_specified;
goto handle_error;
}
name = buf;
}
if (stricmp(history, "new") == 0) {
FILE* f = fopen(name, "r");
if (f != NULL) {
fclose(f);
error = file_already_exists;
goto handle_error;
}
fd->f = fopen(name, "w+");
mode = rdwr_mode|trunc_mode;
} else if (stricmp(history, "old") == 0) {
fd->f = fopen(name, "r+");
mode = rdwr_mode;
if (fd->f == NULL) {
fd->f = fopen(name, "r");
mode = rd_mode;
}
} else if (stricmp(history, "unknown") == 0) {
fd->f = fopen(name, "r+");
mode = rdwr_mode;
if (fd->f == NULL) {
fd->f = fopen(name, "w+");
}
} else {
error = invalid_history;
goto handle_error;
}
if (fd->f == NULL) {
error = unable_to_open_file;
goto handle_error;
}
complete_open:
fd->mode = mode;
fd->state &= ~(fs_record_defined|fs_next_pos);
fd->name = strdup(name);
if (error_code != NULL) {
*error_code = file_successfully_opened;
}
return;
handle_error:
if (error_code == NULL) {
if (!(fd->state & fs_ignore_error)) {
if (error == file_already_exists) {
fprintf(stderr, "open: 'new' history is specified and file "
"'%s' already exists\n", name);
} else {
perror("open");
}
exit(2);
}
} else {
*error_code = (error == file_already_exists)
? unable_to_open_file : error;
}
}
void pio_reset_file(file_descriptor* fd, size_t record_size,
const char* file_name, const char* options,
integer* error_code)
{
if (file_name == NULL) {
ioresult = fd->error = IO_OK;
if (fd == &input.desc) {
/* Oregon Pascal-2 extension */
if (error_code) {
boolean ignore_error = pio_ignore_error;
pio_ignore_error = true;
cread("\n");
pio_ignore_error = ignore_error;
*error_code = pio_open_status(fd);
} else {
cread("\n");
}
} else {
char new_file_name[MAX_FILE_NAME];
if (fd->f == NULL) {
assert(fd->name != NULL);
strcpy(new_file_name, fd->name);
open_file(fd, new_file_name, options, error_code, rd_mode,
record_size);
} else {
if (!(fd->mode & rd_mode)) {
strcpy(new_file_name, fd->name);
open_file(fd, new_file_name, options, error_code, rd_mode,
record_size);
} else {
if (fseek(fd->f, 0, SEEK_SET) == Ok) {
fd->mode |= rd_mode;
fd->state &= ~(fs_record_defined|fs_next_pos);
} else {
ioresult = fd->error = IO_ERROR;
if (error_code == NULL) {
handle_error(fd);
}
}
}
if (error_code) {
*error_code = pio_open_status(fd);
}
}
}
} else {
open_file(fd, file_name, options, error_code, rd_mode, record_size);
}
}
void pio_get_record(file_descriptor* fd, void* record, size_t record_size)
{
ioresult = fd->error = IO_OK;
if (!(fd->state & fs_next_pos)) {
if (fread(record, record_size, 1, fd->f) != 1) {
ioresult = fd->error = input_error(fd->f);
handle_error(fd);
}
}
fd->state &= ~(fs_record_defined|fs_next_pos);
}
void pio_put_record(file_descriptor* fd, void* record, size_t record_size)
{
ioresult = fd->error = IO_OK;
if (fd->state & fs_record_defined) {
if (fd->state & fs_next_pos) {
if (fseek(fd->f, -(long)record_size, SEEK_CUR) != Ok) {
ioresult = fd->error = IO_ERROR;
handle_error(fd);
return;
}
}
if (fwrite(record, record_size, 1, fd->f) != 1) {
ioresult = fd->error = IO_ERROR;
}
} else {
if (fseek(fd->f, record_size, SEEK_CUR) != Ok) {
ioresult = fd->error = IO_ERROR;
}
}
handle_error(fd);
fd->state &= ~(fs_record_defined|fs_next_pos);
}
void pio_access_record(file_descriptor* fd, void* record, size_t record_size)
{
ioresult = fd->error = IO_OK;
if (!(fd->state & fs_record_defined)) {
if (fread(record, record_size, 1, fd->f) != 1) {
ioresult = fd->error = input_error(fd->f);
handle_error(fd);
} else {
fd->state |= (fs_record_defined|fs_next_pos);
}
}
}
void pio_store_record(file_descriptor* fd, void* record, size_t record_size,
void* src)
{
memcpy(record, src, record_size);
fd->state |= fs_record_defined;
}
void pio_copy_record(file_descriptor* src_fd, void* src_record,
file_descriptor* dst_fd, void* dst_record,
size_t record_size)
{
pio_access_record(src_fd, src_record, record_size);
if (src_fd->error == IO_OK) {
if (src_fd->error == IO_OK) {
pio_store_record(dst_fd, dst_record, record_size, src_record);
pio_get_record(src_fd, src_record, record_size);
}
}
}
boolean pio_check_end_of_file(file_descriptor *fd)
{
if (!(fd->state & fs_next_pos)) {
int ch = getc(fd->f);
if (ch == EOF) return true;
ungetc(ch, fd->f);
}
return false;
}
boolean pio_check_end_of_line(text_descriptor *td)
{
if (!(td->desc.state & fs_record_defined)) {
int ch = getc(td->desc.f);
if (ch == EOF) {
return true;
}
td->record = ch;
td->desc.state |= (fs_record_defined|fs_next_pos);
}
return td->record == '\n';
}
void pio_close_file(file_descriptor* fd)
{
if (fd->f != NULL) {
if (fclose(fd->f) < 0) {
ioresult = fd->error = IO_ERROR;
handle_error(fd);
}
fd->f = NULL;
}
if (fd->name != NULL) {
free(fd->name);
fd->name = NULL;
}
}
void pio_seek_file(file_descriptor* fd, void *record, size_t record_size,
integer position)
{
ioresult = fd->error = IO_OK;
if (fseek(fd->f, (position-1)*record_size, SEEK_SET) != Ok) {
ioresult = fd->error = IO_ERROR;
handle_error(fd);
} else {
fd->state &= ~(fs_record_defined|fs_next_pos);
}
}
long pio_get_file_size(file_descriptor* fd, size_t record_size)
{
fpos_t pos;
long size;
fgetpos(fd->f, &pos);
fseek(fd->f, 0, SEEK_END);
size = ftell(fd->f);
fsetpos(fd->f, &pos);
return size / record_size;
}
#undef rename
void pio_rename_file(file_descriptor* fd, const char* new_name)
{
if (fd->f != NULL) {
fclose(fd->f);
fd->f = NULL;
}
assert(fd->name != NULL);
ioresult = fd->error = IO_OK;
if (*new_name == '.') {
char *s = strrchr(fd->name, '.');
char *name_with_ext;
if (s == NULL) {
s = fd->name + strlen(fd->name);
}
name_with_ext = (char*)malloc(s+1-fd->name + strlen(new_name));
sprintf(name_with_ext, "%.*s%s", (int)(s - fd->name),
fd->name, new_name);
if (rename(fd->name, name_with_ext) != Ok) {
ioresult = fd->error = IO_ERROR;
handle_error(fd);
return;
}
free(fd->name);
fd->name = name_with_ext;
} else {
if (rename(fd->name, new_name) != Ok) {
ioresult = fd->error = IO_ERROR;
handle_error(fd);
return;
}
free(fd->name);
fd->name = strdup(new_name);
}
}
void pio_flush_file(file_descriptor* fd)
{
fflush(fd->f);
}
void pio_delete_file(file_descriptor* fd)
{
ioresult = fd->error = IO_OK;
if (fd->f != NULL) {
fclose(fd->f);
fd->f = NULL;
}
if (fd->name != NULL) {
if (remove(fd->name) != Ok) {
ioresult = fd->error = IO_ERROR;
handle_error(fd);
} else {
free(fd->name);
fd->name = NULL;
}
}
}
void pio_read_record(file_descriptor* fd, void* record, size_t record_size,
void* dst)
{
pio_access_record(fd, record, record_size);
if (fd->error == IO_OK) {
memcpy(dst, record, record_size);
pio_get_record(fd, record, record_size);
}
}
void pio_write_record(file_descriptor* fd, void* record, size_t record_size,
void* src)
{
memcpy(record, src, record_size);
fd->state |= fs_record_defined;
pio_put_record(fd, record, record_size);
}
/*
* Text input functions
*/
#define preinput(td) \
if (td->desc.state & fs_next_pos) { \
ungetc(td->record, td->desc.f); \
td->desc.state &= ~(fs_record_defined|fs_next_pos); \
}
void pio_input_real(text_descriptor* td, double* val)
{
preinput(td);
td->desc.error = ioresult = IO_OK;
if (fscanf(td->desc.f, "%lf", val) != 1) {
td->desc.error = ioresult = input_error(td->desc.f);
handle_error(&td->desc);
}
}
void pio_input_integer(text_descriptor* td, int* val)
{
preinput(td);
td->desc.error = ioresult = IO_OK;
if (fscanf(td->desc.f, "%d", val) != 1) {
td->desc.error = ioresult = input_error(td->desc.f);
handle_error(&td->desc);
}
}
void pio_input_unsigned(text_descriptor* td, unsigned* val)
{
preinput(td);
td->desc.error = ioresult = IO_OK;
if (fscanf(td->desc.f, "%u", val) != 1) {
td->desc.error = ioresult = input_error(td->desc.f);
handle_error(&td->desc);
}
}
void pio_input_long(text_descriptor* td, long* val)
{
preinput(td);
td->desc.error = ioresult = IO_OK;
if (fscanf(td->desc.f, "%ld", val) != 1) {
td->desc.error = ioresult = input_error(td->desc.f);
handle_error(&td->desc);
}
}
void pio_input_ulong(text_descriptor* td, unsigned long* val)
{
preinput(td);
td->desc.error = ioresult = IO_OK;
if (fscanf(td->desc.f, "%lu", val) != 1) {
td->desc.error = ioresult = input_error(td->desc.f);
handle_error(&td->desc);
}
}
void pio_input_char(text_descriptor* td, char* val)
{
if (!(td->desc.state & fs_next_pos)) {
int ch = getc(td->desc.f);
if (ch == EOF) {
td->desc.error = ioresult = IO_EOF;
handle_error(&td->desc);
return;
}
td->record = ch;
}
if (td->record == '\n') td->record = ' ';
*val = td->record;
td->desc.state &= ~(fs_record_defined|fs_next_pos);
}
int pio_input_string(text_descriptor* td, char* dst, size_t len, int padding)
{
int ch = (td->desc.state & fs_next_pos) ? td->record : getc(td->desc.f);
size_t n = 0;
while (n < len && ch != EOF && ch != '\n') {
*dst++ = ch;
ch = getc(td->desc.f);
n += 1;
}
if (padding) {
while (n < len) {
*dst++ = ' ';
n += 1;
}
}
td->record = ch;
if (ch != EOF) {
td->desc.state |= (fs_record_defined|fs_next_pos);
td->desc.error = ioresult = IO_OK;
} else {
td->desc.error = ioresult = IO_EOF;
handle_error(&td->desc);
}
return n;
}
void pio_input_newline(text_descriptor* td)
{
int ch = (td->desc.state & fs_next_pos) ? td->record : getc(td->desc.f);
while(ch != EOF && ch != '\n') {
ch = getc(td->desc.f);
}
td->desc.state &= ~(fs_record_defined|fs_next_pos);
td->desc.error = ioresult = (ch == EOF) ? IO_EOF : IO_OK;
handle_error(&td->desc);
}
/*
* Text output functions
*/
#define postoutput(td) (td->desc.state &= ~(fs_record_defined|fs_next_pos), \
td->desc.error=ferror(td->desc.f) ? IO_ERROR : IO_OK,\
handle_error(&td->desc))
void pio_output_end_of_page(text_descriptor* td)
{
putc('\f', td->desc.f);
postoutput(td);
}
void pio_output_real(text_descriptor* td, double val, const int* width,
const int* prec)
{
if (prec == NULL && width == NULL) {
fprintf(td->desc.f, "% G", val);
} else if (prec != NULL && width != NULL) {
if (*prec < 0) {
fprintf(td->desc.f, "%*.*E", *width, -*prec, val);
} else {
fprintf(td->desc.f, "%*.*f", *width, *prec, val);
}
} else {
fprintf(td->desc.f, "%*E", *width, val);
}
postoutput(td);
}
void pio_output_integer(text_descriptor* td, int val, const int* width)
{
if (width == NULL) {
fprintf(td->desc.f, "%7d", val);
} else if(*width < 0) {
fprintf(td->desc.f, "%*o", -*width, val);
} else {
fprintf(td->desc.f, "%*d", *width, val);
}
postoutput(td);
}
void pio_output_long(text_descriptor* td, long val, const int* width)
{
if (width == NULL) {
fprintf(td->desc.f, "%7ld", val);
} else if(*width < 0) {
fprintf(td->desc.f, "%*lo", -*width, val);
} else {
fprintf(td->desc.f, "%*ld", *width, val);
}
postoutput(td);
}
void pio_output_unsigned(text_descriptor* td, unsigned val, const int* width)
{
if (width == NULL) {
fprintf(td->desc.f, "%7u", val);
} else if(*width < 0) {
fprintf(td->desc.f, "%*o", -*width, val);
} else {
fprintf(td->desc.f, "%*u", *width, val);
}
postoutput(td);
}
void pio_output_ulong(text_descriptor* td, unsigned long val, const int* width)
{
if (width == NULL) {
fprintf(td->desc.f, "%7lu", val);
} else if(*width < 0) {
fprintf(td->desc.f, "%*lo", -*width, val);
} else {
fprintf(td->desc.f, "%*lu", *width, val);
}
postoutput(td);
}
void pio_output_char(text_descriptor* td, char val, const int* width)
{
if (width == NULL) {
fprintf(td->desc.f, "%c", val);
} else {
fprintf(td->desc.f, "%*c", *width, val);
}
postoutput(td);
}
void pio_output_boolean(text_descriptor* td, boolean val, const int* width)
{
if (width == NULL) {
fprintf(td->desc.f, val ? " TRUE" : "FALSE");
} else {
fprintf(td->desc.f, "%*s", *width, val ? "TRUE" : "FALSE");
}
postoutput(td);
}
void pio_output_string(text_descriptor* td, const char* buf, size_t len,
const int* width)
{
if (width == NULL) {
fprintf(td->desc.f, "%.*s", (int)len, buf);
} else if ((size_t)*width >= len) {
fprintf(td->desc.f, "%*.*s", *width, (int)len, buf);
} else {
fprintf(td->desc.f, "%.*s", *width, buf);
}
postoutput(td);
}
void pio_output_newline(text_descriptor* td)
{
putc('\n', td->desc.f);
postoutput(td);
}
static void format_read(text_descriptor* td, char* fmt, va_list ap)
{
td->desc.error = ioresult = IO_OK;
while(*fmt != '\0' && td->desc.error == IO_OK) {
if (*fmt++ == '%') {
switch (*fmt++) {
case 'i':
{ integer* ptr = va_arg(ap, integer*);
int tmp;
pio_input_integer(td, &tmp);
*ptr = tmp;
}
continue;
case 'f':
{ real* ptr = va_arg(ap, real*);
double tmp;
pio_input_real(td, &tmp);
*ptr = (real)tmp;
}
continue;
case 'c':
{ char* ptr = va_arg(ap, char*);
pio_input_char(td, ptr);
}
continue;
case 'B':
{ int tmp;
pio_input_integer(td, &tmp);
*va_arg(ap, char*) = tmp;
}
continue;
case 'W':
{ int tmp;
pio_input_integer(td, &tmp);
*va_arg(ap, short*) = tmp;
}
continue;
case 's':
{ int low = va_arg(ap, int);
int high = va_arg(ap, int);
char *ptr = va_arg(ap, char*);
pio_input_string(td, ptr, high-low+1, true);
}
continue;
}
}
if (*(fmt-1) == '\n') {
pio_input_newline(td);
} else {
/*extension: pascal converter never generate such format strings*/
int ch = (td->desc.state & fs_next_pos) ? td->record
: getc(td->desc.f);
td->desc.state &= ~(fs_record_defined|fs_next_pos);
if (ch != *(unsigned char*)(fmt-1)) {
td->desc.error = ioresult = IO_FORMAT_ERROR;
handle_error(&td->desc);
}
}
}
}
enum { const_prec=1, var_prec=2, const_width=4, var_width=8 };
static void format_write(text_descriptor* td, char* fmt, va_list ap)
{
td->desc.error = ioresult = IO_OK;
while(*fmt != '\0' && td->desc.error == IO_OK) {
if (*fmt++ == '%') {
int prec, width;