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libc.obj:

Browse Source 
- now using vsscanf from BaseLibc;
 - delete extra pragma
 - disable sort includes(clang-format)

git-svn-id: svn://kolibrios.org@9868 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
turbocat 2022-08-02 13:30:05 +00:00
parent a7f779193d
commit ec9a93aa6a
13 changed files with 531 additions and 603 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
programs/develop/ktcc/trunk/libc.obj/.clang-format
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@ -3,4 +3,5 @@
BasedOnStyle: WebKit
AlignTrailingComments: true
AlignConsecutiveMacros: true
SortIncludes: false
...

3
programs/develop/ktcc/trunk/libc.obj/source/libc.c
View File

@ -26,7 +26,6 @@
#include "stdio/fgets.c"
#include "stdio/fopen.c"
#include "stdio/format_print.c"
#include "stdio/format_scan.c"
#include "stdio/fprintf.c"
#include "stdio/fputc.c"
#include "stdio/fputs.c"
@ -51,12 +50,14 @@
#include "stdio/snprintf.c"
#include "stdio/sprintf.c"
#include "stdio/sscanf.c"
#include "stdio/strntoumax.c"
#include "stdio/tmpfile.c"
#include "stdio/tmpnam.c"
#include "stdio/ungetc.c"
#include "stdio/vfprintf.c"
#include "stdio/vprintf.c"
#include "stdio/vsnprintf.c"
#include "stdio/vsscanf.c"
#include "string/memccpy.c"
#include "string/memchr.c"

2
programs/develop/ktcc/trunk/libc.obj/source/stdio/format_print.h
View File

@ -1,12 +1,10 @@
#include <stddef.h>
#include <stdarg.h>
#pragma pack(push,1)
typedef struct {
void (*fct)(char character, void* arg);
void* arg;
} out_fct_wrap_type;
#pragma pack(pop)
typedef void (*out_fct_type)(char character, void* buffer, size_t idx, size_t maxlen);
void _out_buffer(char character, void* buffer, size_t idx, size_t maxlen);

435
programs/develop/ktcc/trunk/libc.obj/source/stdio/format_scan.c
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@ -1,435 +0,0 @@
/*
function for format read from any source
Siemargl formats as http://www.cplusplus.com/reference/cstdio/scanf/, no wchar though
http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap05.html is used too
todo:
[characters], [^characters]
-%n nothing scanned, filled only if good result
-%d, i, u, o, x, p read similar - detect base by prefix 0 or 0x
-%a
-can overflow unsigned as signed
-radix point always '.', no LOCALEs
*/
#include <stdio.h>
#include <ctype.h>
#include <math.h>
#include <stdarg.h>
typedef int (*virtual_getc)(void *sp, const void *obj);
typedef void (*virtual_ungetc)(void *sp, int c, const void *obj);
enum flags_t
{
flag_unsigned = 0x02,
flag_register = 0x04,
flag_plus = 0x08,
flag_left_just = 0x10,
flag_lead_zeros = 0x20,
flag_space_plus = 0x40,
flag_hash_sign = 0x80,
flag_point = 0x100
};
int try_parse_real(long double *real, int ch, const void *src, void *save, virtual_getc vgetc, virtual_ungetc vungetc)
// returns 1 if OK, -1 == EOF, -2 parse broken
{
int sign = 1, have_digits = 0;
long long div;
if (ch == '+')
{
ch = vgetc(save, src);
if (ch == EOF) return EOF;
} else
if (ch == '-')
{
sign = -1;
ch = vgetc(save, src);
if (ch == EOF) return EOF;
};
*real = 0.0;
for (;;) // mantissa before point
{
// test ch is valid
if (isdigit(ch))
{
*real = *real * 10 + ch - '0';
have_digits++;
ch = vgetc(save, src);
if (ch == EOF || isspace(ch)) break; // ok, just finish num
} else
if (ch == '.' || ch == 'E' || ch == 'e')
{
break; // ok
}
else
{
vungetc(save, ch, src);
break;
}
}
if (ch != '.' && ch != 'E' && ch != 'e') // ok, just integer part
{
*real *= sign;
if (have_digits)
return 1;
else
return -2;
}
if(ch == '.')
{
ch = vgetc(save, src);
div = 10; // use as divisor
for (;;) // mantissa after point
{
// test ch is valid
if (isdigit(ch))
{
*real += (double)(ch - '0') / div;
div *= 10;
have_digits++;
ch = vgetc(save, src);
if (ch == EOF || isspace(ch)) break; // ok, just finish num
} else
if (ch == 'E' || ch == 'e')
{
break; // ok
}
else
{
vungetc(save, ch, src);
break;
}
}
if (ch != 'E' && ch != 'e') // ok, real as XX.YY
{
*real *= sign;
if (have_digits)
return 1;
else
return -2;
}
}
ch = vgetc(save, src);
*real *= sign;
// exponent
sign = 1;
if (ch == '+')
{
ch = vgetc(save, src);
if (ch == EOF) return EOF;
} else
if (ch == '-')
{
sign = -1;
ch = vgetc(save, src);
if (ch == EOF) return EOF;
};
div = 0;
for (;;)
{
// test ch is valid
if (isdigit(ch))
{
div = div * 10 + ch - '0';
ch = vgetc(save, src);
if (ch == EOF || isspace(ch)) break; // ok, just finish num
}
else
{
vungetc(save, ch, src);
break;
}
}
div *= sign;
*real *= pow(10, div);
return 1;
}
int try_parse_int(long long *digit, int ch, const void *src, void *save, virtual_getc vgetc, virtual_ungetc vungetc)
{
int sign = 1, base = 10, have_digits = 0;
if (ch == '+')
{
ch = vgetc(save, src);
if (ch == EOF) return EOF;
} else
if (ch == '-')
{
sign = -1;
ch = vgetc(save, src);
if (ch == EOF) return EOF;
};
if (ch == '0') // octal or hex, read next
{
ch = vgetc(save, src);
if (ch == 'c' || ch == 'C')
base = 8;
else if (ch == 'x' || ch == 'X')
base = 16;
if (base == 10)
have_digits++;
else
{
char tch = vgetc(save, src);
if ((base == 8 && isdigit(tch) && tch < '8') ||
(base == 16 && isxdigit(tch)))
ch = tch;
else
{
have_digits++;
//base = 10; // not required: zero is zero with any (base > 1)
vungetc(save, tch, src);
}
}
}
*digit = 0;
for (;;)
{
// test ch is valid
if ((isdigit(ch) && base == 10) ||
(isdigit(ch) && base == 8 && ch < '8') ||
(isxdigit(ch) && base == 16))
{
if (base == 16)
{
if (ch <= '9') ch -= '0';
else
if (ch <= 'F') ch = 10 + ch - 'A';
else
ch = 10 + ch - 'a';
}
else
ch -= '0';
*digit = *digit * base + ch;
have_digits++;
ch = vgetc(save, src);
if (ch == EOF || isspace(ch)) break; // ok, just finish num
}
else if (ch == EOF || isspace(ch))
break;
else
{
vungetc(save, ch, src);
break;
}
}
*digit *= sign;
if (have_digits)
return 1;
else
return -2;
}
int format_scan(const void *src, const char *fmt, va_list argp, virtual_getc vgetc, virtual_ungetc vungetc)
{
int i;
int length;
int fmt1, fmt2; // width, precision
size_t pos, posc;
const char *fmtc; // first point to %, fmtc points to specifier
int ch;
int format_flag;
int flag_long; // 2 = long double or long long int or wchar
int *point_to_n = NULL, nread = 0;
int flags; // parsed flags
int save = 0;
char *arg_str;
int *arg_int;
long *arg_long;
long long *arg_longlong;
float *arg_float;
double *arg_double;
long double *arg_longdouble;
long long digit;
long double real;
int skip_next; // skip arguments with * char format
pos = 0;
while(*fmt)
{
while (*fmt && isspace(*fmt)) fmt++; // skip spaces in format str
if (*fmt != '%') // usual char
{
ch = vgetc(&save, src);
if (ch != *fmt++) // char not match format
{
vungetc(&save, ch, src);
break;
}
pos++;
continue;
}
if (*(fmt + 1) == '%') // %%
{
ch = vgetc(&save, src);
if (ch != '%') // char not match format
{
vungetc(&save, ch, src);
break;
}
pos++;
fmt += 2;
continue;
}
//checking to containg format in the string
fmtc = fmt;
posc = pos;
skip_next = 0;
flags = 0;
format_flag = 0;
flag_long = 0; // 2 = long double or long long int or wchar
while(*fmtc != '\0' && !format_flag) // searching end of format
{
fmtc++; posc++;
switch( *fmtc )
{
case 'a':
format_flag = 1;
flags |= flag_unsigned;
break;
case 'c': case 'd': case 'i': case 'e': case 'f': case 'g': case 's': case 'n':
format_flag = 1;
break;
case 'l':
flag_long = flag_long ? 2 : 1; // ll.eq.L
break;
case 'L':
flag_long = 2;
break;
case 'o': case 'u': case 'x': case 'p':
format_flag = 1;
flags |= flag_unsigned;
break;
case '*':
skip_next = 1;
break;
case '.': // just skip
break;
default:
if(isdigit(*fmtc)) break;
goto exit_me; // non format char found - user error
}
}
if (format_flag == 0)
{
goto exit_me; // format char not found - user error
}
fmt1 = 0;
fmt2 = 0;
if (posc - pos > 1) // try to read width, precision
{
fmt++;
for(i = pos + 1; i < posc; i++)
{
switch(*fmt)
{
case '0':
if(fmt1 == 0 && (flags & flag_point) == 0) flags |= flag_lead_zeros;
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
if ((flags & flag_point) == 0)
fmt1 = fmt1 * 10 + (*fmt -'0');
else
fmt2 = fmt2 * 10 + (*fmt -'0');
break;
case '*': // ignoring
break;
case '.':
flags |= flag_point;
break;
case 'l': case 'L': // valid chars - skip
break;
default: // must be error
goto exit_me; // format char not found - user error
}
fmt++;
}
}
// do real work - format arguments values
// skip input spaces
do {
ch = vgetc(&save, src);
if (ch == EOF) goto exit_me;
} while (isspace(ch));
switch(*fmtc)
{
case 'n':
point_to_n = va_arg(argp, int*);
vungetc(&save, ch, src);
break;
case 'c': // read width chars, ever spaces
if (!skip_next) arg_str = va_arg(argp, char*);
if (fmt1 == 0) length = 1;
else length = fmt1;
for (i = 0; i < length;)
{
if (!skip_next) *arg_str++ = ch;
i++;
ch = vgetc(&save, src);
if (ch == EOF) break;
}
if (i < length) goto exit_me; // not enough chars
break;
case 's':
if (!skip_next) arg_str = va_arg(argp, char*);
if (fmt1 == 0) length = 4095; // max string scan 4096
else length = fmt1;
for (i = 0; i < length; i++)
{
if (!skip_next) *arg_str++ = ch;
ch = vgetc(&save, src);
if (ch == EOF || isspace(ch)) break; // ok, just finish string
}
if (!skip_next) *arg_str++ = '\0';
break;
case 'd': case 'i': case 'u':
case 'o': case 'p': case 'x':
i = try_parse_int(&digit, ch, src, &save, vgetc, vungetc);
if (i < 0) goto exit_me;
if (!skip_next)
if (flag_long == 0) { arg_int = va_arg(argp, int*); *arg_int = (int)digit; } else
if (flag_long == 1) { arg_long = va_arg(argp, long*); *arg_long = (long)digit; } else
if (flag_long == 2) { arg_longlong = va_arg(argp, long long*); *arg_longlong = digit; }
break;
case 'a': case 'A': case 'f': case 'F':
case 'e': case 'E':
case 'g': case 'G':
i = try_parse_real(&real, ch, src, &save, vgetc, vungetc);
if (i < 0) goto exit_me;
if (!skip_next)
if (flag_long == 0) { arg_float = va_arg(argp, float*); *arg_float = (float)real; } else
if (flag_long == 1) { arg_double = va_arg(argp, double*); *arg_double = (double)real; } else
if (flag_long == 2) { arg_longdouble = va_arg(argp, long double*); *arg_longdouble = real; }
break;
}
fmt = fmtc + 1;
if (!skip_next) nread++;
}
exit_me:
if (point_to_n) *point_to_n = nread;
return nread;
}

20
programs/develop/ktcc/trunk/libc.obj/source/stdio/format_scan.h
View File

@ -1,20 +0,0 @@
#include <stdio.h>
typedef int (*virtual_getc)(void *sp, const void *obj);
typedef void (*virtual_ungetc)(void *sp, int c, const void *obj);
enum flags_t
{
flag_unsigned = 0x02,
flag_register = 0x04,
flag_plus = 0x08,
flag_left_just = 0x10,
flag_lead_zeros = 0x20,
flag_space_plus = 0x40,
flag_hash_sign = 0x80,
flag_point = 0x100
};
char *__scanf_buffer;
extern int _format_scan(const void *src, const char *fmt, va_list argp, virtual_getc vgetc, virtual_ungetc vungetc);

45
programs/develop/ktcc/trunk/libc.obj/source/stdio/fscanf.c
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@ -1,42 +1,23 @@
#include <limits.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
int virtual_getc_file(void *sp, const void *obj)
// get next chat from file obj, save point is ptr to string char ptr
int vfscanf(FILE* stream, const char* format, va_list arg)
{
FILE *f = (FILE *)obj;
int ch = fgetc(f);
//printf("getc '%c'[%d];", ch, ch);
return ch;
static char scanf_buffer[STDIO_MAX_MEM];
fgets(scanf_buffer, STDIO_MAX_MEM-1, stream);
return vsscanf(scanf_buffer, format, arg);
}
void virtual_ungetc_file(void *sp, int c, const void *obj)
// if can, one step back savepoint in s
int fscanf(FILE* stream, const char* format, ...)
{
FILE *f = (FILE *)obj;
va_list arg;
int n;
va_start(arg, format);
if (f) ungetc(c, f);
n = vfscanf(stream, format, arg);
va_end(arg);
return n;
}
int vfscanf ( FILE * stream, const char * format, va_list arg )
{
return format_scan(stream, format, arg, &virtual_getc_file, &virtual_ungetc_file);
};
int fscanf ( FILE * stream, const char * format, ...)
{
va_list arg;
int n;
va_start(arg, format);
n = vfscanf(stream, format, arg);
va_end(arg);
return n;
}

66
programs/develop/ktcc/trunk/libc.obj/source/stdio/scanf.c
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@ -1,65 +1,21 @@
#include <limits.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
char *__scanf_buffer = 0;
int virtual_getc_con(void *sp, const void *obj)
// get next chat from string obj, save point is ptr to string char ptr
int vscanf(const char* format, va_list arg)
{
int ch;
const char**spc= (const char**)sp;
if (!spc) return EOF; // error
if (!*spc) *spc = __scanf_buffer; // first call, init savepoint
while (!**spc) // need to read more
{
if(!gets(__scanf_buffer)) return EOF;
*spc = __scanf_buffer;
strcat(__scanf_buffer,"\n"); // imitate delimiter
}
if (**spc == 26 || **spc == 3) // ^C ^Z end of scan, clear buffer
{
*spc = __scanf_buffer;
*__scanf_buffer = 0;
return EOF; // ^C ^Z
}
ch = **spc; (*spc)++ ;
//printf("getc '%c'[%d];", ch, ch);
return ch;
}
void virtual_ungetc_con(void *sp, int c, const void *obj)
// if can, one step back savepoint in s
{
const char**spc= (const char**)sp;
if (spc && *spc > __scanf_buffer) (*spc)--;
//printf("Ungetc '%c'[%d];", c, c);
}
int vscanf ( const char * format, va_list arg )
{
return format_scan(NULL, format, arg, &virtual_getc_con, &virtual_ungetc_con);
static char scanf_buffer[STDIO_MAX_MEM];
gets(scanf_buffer);
return vsscanf(scanf_buffer, format, arg);
};
int scanf ( const char * format, ...)
int scanf(const char* format, ...)
{
va_list arg;
int n;
va_start(arg, format);
if(__scanf_buffer == NULL) __scanf_buffer = malloc(4096);
if(__scanf_buffer == NULL) return -3;
*__scanf_buffer = 0;
n = vscanf(format, arg);
va_end(arg);
return n;
va_list arg;
va_start(arg, format);
int n = vscanf(format, arg);
va_end(arg);
return n;
}

1
programs/develop/ktcc/trunk/libc.obj/source/stdio/sprintf.c
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@ -1,6 +1,5 @@
/* Copyright (C) 2021 Logaev Maxim (turbocat2001), GPLv2 */
//#include "format_print.h"
#include <stdio.h>
int sprintf(char* buffer, const char* format, ...)

50
programs/develop/ktcc/trunk/libc.obj/source/stdio/sscanf.c
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@ -1,46 +1,12 @@
#include <stdio.h>
#include <stdarg.h>
#include <stdio.h>
int virtual_getc_str(void *sp, const void *obj)
// get next chat from string obj, save point is ptr to string char ptr
int sscanf(const char* s, const char* format, ...)
{
int ch;
const char *s = (const char *)obj;
const char**spc= (const char**)sp;
if (!s || !spc) return EOF; // error
if (!*spc) *spc = s; // first call, init savepoint
if (!**spc) return EOF; // EOS
ch = **spc; (*spc)++ ;
return ch;
va_list arg;
int n;
va_start(arg, format);
n = vsscanf(s, format, arg);
va_end(arg);
return n;
}
void virtual_ungetc_str(void *sp, int c, const void *obj)
// if can, one step back savepoint in s
{
const char *s = (const char *)obj;
const char**spc= (const char**)sp;
if (s && spc && *spc > s) (*spc)--;
}
int vsscanf ( const char * s, const char * format, va_list arg )
{
return format_scan(s, format, arg, &virtual_getc_str, &virtual_ungetc_str);
};
int sscanf ( const char * s, const char * format, ...)
{
va_list arg;
int n;
va_start(arg, format);
n = vsscanf(s, format, arg);
va_end(arg);
return n;
}

77
programs/develop/ktcc/trunk/libc.obj/source/stdio/strntoumax.c Normal file
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@ -0,0 +1,77 @@
/*
* strntoumax.c
*
* The strntoumax() function and associated
*/
#include <stddef.h>
#include <stdint.h>
#include <ctype.h>
#include <inttypes.h>
static inline int digitval(int ch)
{
if (ch >= '0' && ch <= '9') {
return ch - '0';
} else if (ch >= 'A' && ch <= 'Z') {
return ch - 'A' + 10;
} else if (ch >= 'a' && ch <= 'z') {
return ch - 'a' + 10;
} else {
return -1;
}
}
uintmax_t strntoumax(const char *nptr, char **endptr, int base, size_t n)
{
int minus = 0;
uintmax_t v = 0;
int d;
while (n && isspace((unsigned char)*nptr)) {
nptr++;
n--;
}
/* Single optional + or - */
if (n) {
char c = *nptr;
if (c == '-' || c == '+') {
minus = (c == '-');
nptr++;
n--;
}
}
if (base == 0) {
if (n >= 2 && nptr[0] == '0' &&
(nptr[1] == 'x' || nptr[1] == 'X')) {
n -= 2;
nptr += 2;
base = 16;
} else if (n >= 1 && nptr[0] == '0') {
n--;
nptr++;
base = 8;
} else {
base = 10;
}
} else if (base == 16) {
if (n >= 2 && nptr[0] == '0' &&
(nptr[1] == 'x' || nptr[1] == 'X')) {
n -= 2;
nptr += 2;
}
}
while (n && (d = digitval(*nptr)) >= 0 && d < base) {
v = v * base + d;
n--;
nptr++;
}
if (endptr)
*endptr = (char *)nptr;
return minus ? -v : v;
}

27
programs/develop/ktcc/trunk/libc.obj/source/stdio/vprintf.c
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@ -8,24 +8,23 @@
#include <sys/ksys.h>
#include <errno.h>
#include <limits.h>
//#include "format_print.h"
int vsprintf (char * s, const char * format, va_list arg)
int vsprintf(char* s, const char* format, va_list arg)
{
return vsnprintf(s, STDIO_MAX_MEM, format, arg);
}
int vprintf ( const char * format, va_list arg )
int vprintf(const char* format, va_list arg)
{
int len = 0;
char *s = malloc(STDIO_MAX_MEM);
if(!s){
errno = ENOMEM;
return errno;
}
con_init();
len = vsnprintf(s, STDIO_MAX_MEM, format, arg);
con_write_string(s, len);
free(s);
return(len);
int len = 0;
char* s = malloc(STDIO_MAX_MEM);
if (!s) {
errno = ENOMEM;
return errno;
}
con_init();
len = vsnprintf(s, STDIO_MAX_MEM, format, arg);
con_write_string(s, len);
free(s);
return (len);
}

2
programs/develop/ktcc/trunk/libc.obj/source/stdio/vsnprintf.c
View File

@ -1,4 +1,4 @@
//#include "format_print.h"
#include <stdio.h>
int vsnprintf(char* buffer, size_t count, const char* format, va_list va)
{

405
programs/develop/ktcc/trunk/libc.obj/source/stdio/vsscanf.c Normal file
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@ -0,0 +1,405 @@
/*
* vsscanf.c
*
* vsscanf(), from which the rest of the scanf()
* family is built
*/
#include <ctype.h>
#include <inttypes.h>
#include <limits.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#ifndef LONG_BIT
#define LONG_BIT (CHAR_BIT * sizeof(long))
#endif
enum flags {
FL_SPLAT = 0x01, /* Drop the value, do not assign */
FL_INV = 0x02, /* Character-set with inverse */
FL_WIDTH = 0x04, /* Field width specified */
FL_MINUS = 0x08, /* Negative number */
};
enum ranks {
rank_char = -2,
rank_short = -1,
rank_int = 0,
rank_long = 1,
rank_longlong = 2,
rank_ptr = INT_MAX /* Special value used for pointers */
};
#define MIN_RANK rank_char
#define MAX_RANK rank_longlong
#define INTMAX_RANK rank_longlong
#define SIZE_T_RANK rank_long
#define PTRDIFF_T_RANK rank_long
enum bail {
bail_none = 0, /* No error condition */
bail_eof, /* Hit EOF */
bail_err /* Conversion mismatch */
};
static inline const char* skipspace(const char* p)
{
while (isspace((unsigned char)*p))
p++;
return p;
}
#undef set_bit
static inline void set_bit(unsigned long* bitmap, unsigned int bit)
{
bitmap[bit / LONG_BIT] |= 1UL << (bit % LONG_BIT);
}
#undef test_bit
static inline int test_bit(unsigned long* bitmap, unsigned int bit)
{
return (int)(bitmap[bit / LONG_BIT] >> (bit % LONG_BIT)) & 1;
}
int vsscanf(const char* buffer, const char* format, va_list ap)
{
const char* p = format;
char ch;
unsigned char uc;
const char* q = buffer;
const char* qq;
uintmax_t val = 0;
int rank = rank_int; /* Default rank */
unsigned int width = UINT_MAX;
int base;
enum flags flags = 0;
enum {
st_normal, /* Ground state */
st_flags, /* Special flags */
st_width, /* Field width */
st_modifiers, /* Length or conversion modifiers */
st_match_init, /* Initial state of %[ sequence */
st_match, /* Main state of %[ sequence */
st_match_range, /* After - in a %[ sequence */
} state
= st_normal;
char* sarg = NULL; /* %s %c or %[ string argument */
enum bail bail = bail_none;
int sign;
int converted = 0; /* Successful conversions */
unsigned long matchmap[((1 << CHAR_BIT) + (LONG_BIT - 1)) / LONG_BIT];
int matchinv = 0; /* Is match map inverted? */
unsigned char range_start = 0;
(void)sign;
while ((ch = *p++) && !bail) {
switch (state) {
case st_normal:
if (ch == '%') {
state = st_flags;
flags = 0;
rank = rank_int;
width = UINT_MAX;
} else if (isspace((unsigned char)ch)) {
q = skipspace(q);
} else {
if (*q == ch)
q++;
else
bail = bail_err; /* Match failure */
}
break;
case st_flags:
switch (ch) {
case '*':
flags |= FL_SPLAT;
break;
case '0': /* falls-through */
case '1': /* falls-through */
case '2': /* falls-through */
case '3': /* falls-through */
case '4': /* falls-through */
case '5': /* falls-through */
case '6': /* falls-through */
case '7': /* falls-through */
case '8': /* falls-through */
case '9':
width = (ch - '0');
state = st_width;
flags |= FL_WIDTH;
break;
default:
state = st_modifiers;
p--; /* Process this character again */
break;
}
break;
case st_width:
if (ch >= '0' && ch <= '9') {
width = width * 10 + (ch - '0');
} else {
state = st_modifiers;
p--; /* Process this character again */
}
break;
case st_modifiers:
switch (ch) {
/* Length modifiers - nonterminal sequences */
case 'h':
rank--; /* Shorter rank */
break;
case 'l':
rank++; /* Longer rank */
break;
case 'j':
rank = INTMAX_RANK;
break;
case 'z':
rank = SIZE_T_RANK;
break;
case 't':
rank = PTRDIFF_T_RANK;
break;
case 'L':
case 'q':
rank = rank_longlong; /* long double/long long */
break;
default:
/* Output modifiers - terminal sequences */
/* Next state will be normal */
state = st_normal;
/* Canonicalize rank */
if (rank < MIN_RANK)
rank = MIN_RANK;
else if (rank > MAX_RANK)
rank = MAX_RANK;
switch (ch) {
case 'P': /* Upper case pointer */
case 'p': /* Pointer */
rank = rank_ptr;
base = 0;
sign = 0;
goto scan_int;
case 'i': /* Base-independent integer */
base = 0;
sign = 1;
goto scan_int;
case 'd': /* Decimal integer */
base = 10;
sign = 1;
goto scan_int;
case 'o': /* Octal integer */
base = 8;
sign = 0;
goto scan_int;
case 'u': /* Unsigned decimal integer */
base = 10;
sign = 0;
goto scan_int;
case 'x': /* Hexadecimal integer */
case 'X':
base = 16;
sign = 0;
goto scan_int;
case 'n': /* # of characters consumed */
val = (q - buffer);
goto set_integer;
scan_int:
q = skipspace(q);
if (!*q) {
bail = bail_eof;
break;
}
val = strntoumax(q, (char**)&qq, base,
width);
if (qq == q) {
bail = bail_err;
break;
}
q = qq;
if (!(flags & FL_SPLAT))
converted++;
/* fall through */
set_integer:
if (!(flags & FL_SPLAT)) {
switch (rank) {
case rank_char:
*va_arg(ap,
unsigned char*)
= val;
break;
case rank_short:
*va_arg(ap,
unsigned short*)
= val;
break;
case rank_int:
*va_arg(ap,
unsigned int*)
= val;
break;
case rank_long:
*va_arg(ap,
unsigned long*)
= val;
break;
case rank_longlong:
*va_arg(ap,
unsigned long long*)
= val;
break;
case rank_ptr:
*va_arg(ap, void**) = (void*)(uintptr_t)val;
break;
}
}
break;
case 'c': /* Character */
/* Default width == 1 */
width = (flags & FL_WIDTH) ? width : 1;
if (flags & FL_SPLAT) {
while (width--) {
if (!*q) {
bail = bail_eof;
break;
}
}
} else {
sarg = va_arg(ap, char*);
while (width--) {
if (!*q) {
bail = bail_eof;
break;
}
*sarg++ = *q++;
}
if (!bail)
converted++;
}
break;
case 's': /* String */
uc = 1; /* Anything nonzero */
if (flags & FL_SPLAT) {
while (width-- && (uc = *q) && !isspace(uc)) {
q++;
}
} else {
char* sp;
sp = sarg = va_arg(ap, char*);
while (width-- && (uc = *q) && !isspace(uc)) {
*sp++ = uc;
q++;
}
if (sarg != sp) {
/* Terminate output */
*sp = '\0';
converted++;
}
}
if (!uc)
bail = bail_eof;
break;
case '[': /* Character range */
sarg = (flags & FL_SPLAT) ? NULL
: va_arg(ap, char*);
state = st_match_init;
matchinv = 0;
memset(matchmap, 0, sizeof matchmap);
break;
case '%': /* %% sequence */
if (*q == '%')
q++;
else
bail = bail_err;
break;
default: /* Anything else */
/* Unknown sequence */
bail = bail_err;
break;
}
}
break;
case st_match_init: /* Initial state for %[ match */
if (ch == '^' && !(flags & FL_INV)) {
matchinv = 1;
} else {
set_bit(matchmap, (unsigned char)ch);
state = st_match;
}
break;
case st_match: /* Main state for %[ match */
if (ch == ']') {
goto match_run;
} else if (ch == '-') {
range_start = (unsigned char)ch;
state = st_match_range;
} else {
set_bit(matchmap, (unsigned char)ch);
}
break;
case st_match_range: /* %[ match after - */
if (ch == ']') {
/* - was last character */
set_bit(matchmap, (unsigned char)'-');
goto match_run;
} else {
int i;
for (i = range_start; i < (unsigned char)ch;
i++)
set_bit(matchmap, i);
state = st_match;
}
break;
match_run: /* Match expression finished */
qq = q;
uc = 1; /* Anything nonzero */
while (width && (uc = *q)
&& test_bit(matchmap, uc) ^ matchinv) {
if (sarg)
*sarg++ = uc;
q++;
}
if (q != qq && sarg) {
*sarg = '\0';
converted++;
} else {
bail = bail_err;
}
if (!uc)
bail = bail_eof;
break;
}
}
if (bail == bail_eof && !converted)
converted = -1; /* Return EOF (-1) */
return converted;
}