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136 lines
2.6 KiB
136 lines
2.6 KiB
/*
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* UCW Library -- Strings Allocated on the Stack
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*
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* (c) 2005--2007 Martin Mares <mj@ucw.cz>
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* (c) 2005 Tomas Valla <tom@ucw.cz>
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* (c) 2008--2020 Pavel Charvat <pchar@ucw.cz>
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*
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* This software may be freely distributed and used according to the terms
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* of the GNU Lesser General Public License.
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*/
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#include <ucw/lib.h>
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#include <ucw/stkstring.h>
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#include <ucw/string.h>
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#include <stdio.h>
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uint
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stk_array_len(char **s, uint cnt)
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{
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uint l = 1;
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while (cnt--)
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l += strlen(*s++);
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return l;
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}
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void
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stk_array_join(char *x, char **s, uint cnt, uint sep)
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{
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while (cnt--)
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{
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uint l = strlen(*s);
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memcpy(x, *s, l);
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x += l;
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s++;
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if (sep && cnt)
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*x++ = sep;
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}
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*x = 0;
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}
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uint
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stk_printf_internal(const char *fmt, ...)
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{
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uint len = 256;
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char *buf = alloca(len);
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va_list args, args2;
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va_start(args, fmt);
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for (;;)
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{
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va_copy(args2, args);
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int l = vsnprintf(buf, len, fmt, args2);
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va_end(args2);
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if (l < 0)
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len *= 2;
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else
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{
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va_end(args);
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return l+1;
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}
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buf = alloca(len);
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}
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}
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uint
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stk_vprintf_internal(const char *fmt, va_list args)
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{
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uint len = 256;
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char *buf = alloca(len);
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va_list args2;
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for (;;)
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{
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va_copy(args2, args);
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int l = vsnprintf(buf, len, fmt, args2);
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va_end(args2);
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if (l < 0)
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len *= 2;
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else
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{
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va_end(args);
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return l+1;
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}
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buf = alloca(len);
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}
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}
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void
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stk_hexdump_internal(char *dst, const byte *src, uint n)
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{
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mem_to_hex(dst, src, n, ' ');
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}
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void
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stk_fsize_internal(char *buf, u64 x)
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{
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if (x < 1<<10)
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sprintf(buf, "%dB", (int)x);
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else if (x < 10<<10)
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sprintf(buf, "%.1fK", (double)x/(1<<10));
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else if (x < 1<<20)
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sprintf(buf, "%dK", (int)(x/(1<<10)));
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else if (x < 10<<20)
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sprintf(buf, "%.1fM", (double)x/(1<<20));
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else if (x < 1<<30)
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sprintf(buf, "%dM", (int)(x/(1<<20)));
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else if (x < (u64)10<<30)
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sprintf(buf, "%.1fG", (double)x/(1<<30));
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else if (x < (u64)1<<40)
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sprintf(buf, "%dG", (int)(x/(1<<30)));
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else if (x < (u64)10<<40)
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sprintf(buf, "%.1fT", (double)x/((u64)1<<40));
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else if (x != ~(u64)0)
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sprintf(buf, "%dT", (int)(x/((u64)1<<40)));
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else
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strcpy(buf, "unknown");
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}
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#ifdef TEST
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int main(void)
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{
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char *a = stk_strndup("are!",3);
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a = stk_strcat(a, " the ");
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a = stk_strmulticat(a, stk_strdup("Jabberwock, "), "my", NULL);
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char *arr[] = { a, " son" };
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a = stk_strarraycat(arr, 2);
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a = stk_printf("Bew%s!", a);
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puts(a);
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puts(stk_hexdump(a, 3));
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char *ary[] = { "The", "jaws", "that", "bite" };
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puts(stk_strjoin(ary, 4, ' '));
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puts(stk_fsize(1234567));
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return 0;
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}
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#endif
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