mirror of https://github.com/pragma-/pbot.git
99 lines
3.6 KiB
C
99 lines
3.6 KiB
C
#include <limits.h>
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#include <wchar.h>
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#include <stdio.h>
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#include <printf.h>
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#include <locale.h>
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static int printf_binary_handler(FILE *s, const struct printf_info *info, const void *const *args)
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{
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const char *g = 0;
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struct lconv *loc = 0;
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int group = 0, arr = 0, total = 0, len, digits;
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unsigned long long value = info->is_long_double ? *(const unsigned long long *)args[0] :
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info->is_long ? *(const unsigned long *) args[0] :
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info->is_char ? *(const unsigned char *) args[0] :
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info->is_short ? *(const unsigned short *) args[0] :
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*(const unsigned int *) args[0] ;
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char buf[sizeof value * CHAR_BIT], *p = buf;
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while(value) *p++ = '0' + (value & 1), value >>= 1;
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len = p - buf;
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digits = info->prec < 0 ? 1 : info->prec;
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if(len > digits) digits = len;
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if(info->alt) {
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if(digits += -digits & 3) total = digits + (digits - 1) / 4 * !!info->group;
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} else {
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total = digits;
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group = info->group && (loc = localeconv(), *(g = loc->grouping));
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if(group) {
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while(*g > 0 && *g < CHAR_MAX) {
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if(digits - arr <= *g) break;
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++total;
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arr += *g++;
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}
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if(!*g) total += (digits - arr - 1) / g[-1];
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}
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}
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while(!info->left && info->width > total++) fprintf(s, "%lc", (wint_t)info->pad);
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if(info->alt)
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while(digits) {
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fputc(digits-- > len ? '0' : *--p, s);
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if(digits && !(digits % 4) && info->group) fputc('.', s);
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}
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else if(group) {
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if(*g) {
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while(digits > arr) fputc(digits-- > len ? '0' : *--p, s);
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} else {
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int j = (digits - arr) % g[-1];
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if(!j) j = g[-1];
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while(j--) fputc(digits-- > len ? '0' : *--p, s);
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while(digits > arr) {
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fputs(loc->thousands_sep, s);
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for(j = 0; j < g[-1]; ++j) fputc(digits-- > len ? '0' : *--p, s);
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}
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}
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while(digits) {
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int i = *--g;
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fputs(loc->thousands_sep, s);
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while(i--) fputc(digits-- > len ? '0' : *--p, s);
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}
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} else while(digits) fputc(digits-- > len ? '0' : *--p, s);
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while(info->left && info->width > total++) fputc(' ', s);
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return total - 1;
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}
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static int printf_binary_arginfo(const struct printf_info *info, size_t n, int *types, int *sizes)
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{
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if(n < 1) return -1;
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(void)sizes;
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types[0] = info->is_long_double ? PA_INT | PA_FLAG_LONG_LONG :
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info->is_long ? PA_INT | PA_FLAG_LONG :
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info->is_char ? PA_CHAR :
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info->is_short ? PA_INT | PA_FLAG_SHORT :
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PA_INT ;
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return 1;
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}
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__attribute__ (( constructor )) static void printf_binary_register(void)
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{
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setvbuf(stdout, NULL, _IONBF, 0);
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setlocale(LC_ALL, "");
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register_printf_specifier('b', printf_binary_handler, printf_binary_arginfo);
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}
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__attribute__((optnone))
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void gdb(char *cmd) { __asm__ volatile ("" : "+r" (cmd)); }
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#define dump(...) gdb("print " #__VA_ARGS__)
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#define print(...) gdb("print " #__VA_ARGS__)
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#define ptype(...) gdb("ptype " #__VA_ARGS__)
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#define whatis(...) gdb("whatis " #__VA_ARGS__)
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#define trace(...) gdb("break " #__VA_ARGS__)
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#define watch(...) gdb("watch " #__VA_ARGS__)
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#define print_last_statement(...) gdb("print_last_statement " #__VA_ARGS__)
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