1 // 2 // Copyright 2020 Serge Martin 3 // 4 // Permission is hereby granted, free of charge, to any person obtaining a 5 // copy of this software and associated documentation files (the "Software"), 6 // to deal in the Software without restriction, including without limitation 7 // the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 // and/or sell copies of the Software, and to permit persons to whom the 9 // Software is furnished to do so, subject to the following conditions: 10 // 11 // The above copyright notice and this permission notice shall be included in 12 // all copies or substantial portions of the Software. 13 // 14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 // OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 // OTHER DEALINGS IN THE SOFTWARE. 21 // 22 #ifndef U_PRINTF_H 23 #define U_PRINTF_H 24 25 #include <stdarg.h> 26 #include <stddef.h> 27 #include <stdio.h> 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 typedef struct u_printf_info { 34 unsigned num_args; 35 unsigned *arg_sizes; 36 unsigned string_size; 37 char *strings; 38 } u_printf_info; 39 40 const char *util_printf_prev_tok(const char *str); 41 42 /* find next valid printf specifier in a C string wrapper */ 43 size_t util_printf_next_spec_pos(const char *str, size_t pos); 44 45 /* Return the length of the string that would be generated by a printf-style 46 * format and argument list, not including the \0 byte. 47 * The untouched_args parameter is left untouched so it can be re-used by the 48 * caller in a vsnprintf() call or similar. 49 */ 50 size_t u_printf_length(const char *fmt, va_list untouched_args); 51 52 void u_printf(FILE *out, const char *buffer, size_t buffer_size, 53 const u_printf_info*, unsigned info_size); 54 55 void u_printf_ptr(FILE *out, const char *buffer, size_t buffer_size, 56 const u_printf_info **info, unsigned info_size); 57 58 #ifdef __cplusplus 59 } 60 #endif 61 62 #endif 63