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gb_string.h: add gb_printf

This commit is contained in:
Peter McGoron 2021-07-21 23:22:21 -04:00
parent 52a3a542ef
commit e29be3ef1a
1 changed files with 54 additions and 0 deletions
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54
gb_string.h
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@ -198,6 +198,11 @@ int main(int argc, char **argv) {
#ifndef GB_STRING_INCLUDE_GB_STRING_H
#define GB_STRING_INCLUDE_GB_STRING_H
#if !defined(GB_HAS_SNPRINTF) && \
(__STDC_VERSION__ >= 199101L || __cplusplus >= 201103L)
#define GB_HAS_SNPRINTF
#endif
#ifndef GB_ALLOC
#define GB_ALLOC(sz) malloc(sz)
#define GB_FREE(ptr) free(ptr)
@ -276,6 +281,10 @@ gbBool gb_strings_are_equal(gbString const lhs, gbString const rhs);
gbString gb_trim_string(gbString str, char const *cut_set);
#ifdef GB_HAS_SNPRINTF
gbString gb_printf(gbString str, char const *fmt, ...);
gbString gb_vprintf(gbString str, char const *fmt, va_list va);
#endif
#ifdef __cplusplus
}
@ -308,10 +317,22 @@ gb_inline void string_make_space_for(String& str, usize add_len) { str = gb_stri
gb_inline usize string_allocation_size(const String str) { return gb_string_allocation_size(str); }
gb_inline bool strings_are_equal(const String lhs, const String rhs) { return gb_strings_are_equal(lhs, rhs) == GB_TRUE; }
gb_inline void trim_string(String& str, char const *cut_set) { str = gb_trim_string(str, cut_set); }
#ifdef GB_HAS_SNPRINTF
gb_inline void ref_vprintf(String& str, char const *fmt, va_list va) { str = gb_vprintf(str, fmt, va); }
gb_inline void ref_printf(String& str, char const *fmt, ...) {
va_list va;
va_start(va, fmt);
ref_vprintf(str, fmt, va);
va_end(va);
}
#endif
} /* namespace gb */
#endif /* GB_STRING_CPP */
#endif /* GB_STRING_H */
#ifdef GB_STRING_IMPLEMENTATION
static void gb_set_string_length(gbString str, gbUsize len) {
GB_STRING_HEADER(str)->len = len;
}
@ -320,6 +341,39 @@ static void gb_set_string_capacity(gbString str, gbUsize cap) {
GB_STRING_HEADER(str)->cap = cap;
}
#ifdef GB_HAS_SNPRINTF
#include <limits.h>
#include <stdio.h>
gbString gb_vprintf(gbString s, char const *fmt, va_list va) {
va_list va2;
int nl;
gbUsize clen = gb_string_length(s);
va_copy(va2, va);
nl = vsnprintf(NULL, 0, fmt, va2);
va_end(va2);
if (nl < 0 || nl == INT_MAX) {
gb_free_string(s);
return GB_NULLPTR;
}
s = gb_string_make_space_for(s, nl + 1);
if (s == GB_NULLPTR)
return GB_NULLPTR;
vsnprintf(s + clen, nl + 1, fmt, va);
return s;
}
gbString gb_printf(gbString s, char const *fmt, ...) {
va_list va;
va_start(va, fmt);
s = gb_vprintf(s, fmt, va);
va_end(va);
return s;
}
#endif
gbString gb_make_string_length(void const *init_str, gbUsize len) {
gbString str;