comparison: ucx/printf.c
ucx/printf.c
- branch
- newapi
- changeset 253
- 087cc9216f28
- parent 174
- 0358f1d9c506
equal
deleted
inserted
replaced
| 252:7d176764756d | 253:087cc9216f28 |
|---|---|
| 32 #include <string.h> | 32 #include <string.h> |
| 33 | 33 |
| 34 #ifndef CX_PRINTF_SBO_SIZE | 34 #ifndef CX_PRINTF_SBO_SIZE |
| 35 #define CX_PRINTF_SBO_SIZE 512 | 35 #define CX_PRINTF_SBO_SIZE 512 |
| 36 #endif | 36 #endif |
| 37 unsigned const cx_printf_sbo_size = CX_PRINTF_SBO_SIZE; | |
| 37 | 38 |
| 38 int cx_fprintf( | 39 int cx_fprintf( |
| 39 void *stream, | 40 void *stream, |
| 40 cx_write_func wfc, | 41 cx_write_func wfc, |
| 41 char const *fmt, | 42 char const *fmt, |
| 58 char buf[CX_PRINTF_SBO_SIZE]; | 59 char buf[CX_PRINTF_SBO_SIZE]; |
| 59 va_list ap2; | 60 va_list ap2; |
| 60 va_copy(ap2, ap); | 61 va_copy(ap2, ap); |
| 61 int ret = vsnprintf(buf, CX_PRINTF_SBO_SIZE, fmt, ap); | 62 int ret = vsnprintf(buf, CX_PRINTF_SBO_SIZE, fmt, ap); |
| 62 if (ret < 0) { | 63 if (ret < 0) { |
| 64 va_end(ap2); | |
| 63 return ret; | 65 return ret; |
| 64 } else if (ret < CX_PRINTF_SBO_SIZE) { | 66 } else if (ret < CX_PRINTF_SBO_SIZE) { |
| 67 va_end(ap2); | |
| 65 return (int) wfc(buf, 1, ret, stream); | 68 return (int) wfc(buf, 1, ret, stream); |
| 66 } else { | 69 } else { |
| 67 int len = ret + 1; | 70 int len = ret + 1; |
| 68 char *newbuf = malloc(len); | 71 char *newbuf = malloc(len); |
| 69 if (!newbuf) { | 72 if (!newbuf) { |
| 73 va_end(ap2); | |
| 70 return -1; | 74 return -1; |
| 71 } | 75 } |
| 72 | 76 |
| 73 ret = vsnprintf(newbuf, len, fmt, ap2); | 77 ret = vsnprintf(newbuf, len, fmt, ap2); |
| 78 va_end(ap2); | |
| 74 if (ret > 0) { | 79 if (ret > 0) { |
| 75 ret = (int) wfc(newbuf, 1, ret, stream); | 80 ret = (int) wfc(newbuf, 1, ret, stream); |
| 76 } | 81 } |
| 77 free(newbuf); | 82 free(newbuf); |
| 78 } | 83 } |
| 83 CxAllocator const *allocator, | 88 CxAllocator const *allocator, |
| 84 char const *fmt, | 89 char const *fmt, |
| 85 ... | 90 ... |
| 86 ) { | 91 ) { |
| 87 va_list ap; | 92 va_list ap; |
| 88 cxmutstr ret; | |
| 89 va_start(ap, fmt); | 93 va_start(ap, fmt); |
| 90 ret = cx_vasprintf_a(allocator, fmt, ap); | 94 cxmutstr ret = cx_vasprintf_a(allocator, fmt, ap); |
| 91 va_end(ap); | 95 va_end(ap); |
| 92 return ret; | 96 return ret; |
| 93 } | 97 } |
| 94 | 98 |
| 95 cxmutstr cx_vasprintf_a( | 99 cxmutstr cx_vasprintf_a( |
| 102 s.length = 0; | 106 s.length = 0; |
| 103 char buf[CX_PRINTF_SBO_SIZE]; | 107 char buf[CX_PRINTF_SBO_SIZE]; |
| 104 va_list ap2; | 108 va_list ap2; |
| 105 va_copy(ap2, ap); | 109 va_copy(ap2, ap); |
| 106 int ret = vsnprintf(buf, CX_PRINTF_SBO_SIZE, fmt, ap); | 110 int ret = vsnprintf(buf, CX_PRINTF_SBO_SIZE, fmt, ap); |
| 107 if (ret > 0 && ret < CX_PRINTF_SBO_SIZE) { | 111 if (ret >= 0 && ret < CX_PRINTF_SBO_SIZE) { |
| 108 s.ptr = cxMalloc(a, ret + 1); | 112 s.ptr = cxMalloc(a, ret + 1); |
| 109 if (s.ptr) { | 113 if (s.ptr) { |
| 110 s.length = (size_t) ret; | 114 s.length = (size_t) ret; |
| 111 memcpy(s.ptr, buf, ret); | 115 memcpy(s.ptr, buf, ret); |
| 112 s.ptr[s.length] = '\0'; | 116 s.ptr[s.length] = '\0'; |
| 122 } else { | 126 } else { |
| 123 s.length = (size_t) ret; | 127 s.length = (size_t) ret; |
| 124 } | 128 } |
| 125 } | 129 } |
| 126 } | 130 } |
| 131 va_end(ap2); | |
| 127 return s; | 132 return s; |
| 128 } | 133 } |
| 129 | 134 |
| 135 int cx_sprintf_a(CxAllocator *alloc, char **str, size_t len, const char *fmt, ... ) { | |
| 136 va_list ap; | |
| 137 va_start(ap, fmt); | |
| 138 int ret = cx_vsprintf_a(alloc, str, len, fmt, ap); | |
| 139 va_end(ap); | |
| 140 return ret; | |
| 141 } | |
| 142 | |
| 143 int cx_vsprintf_a(CxAllocator *alloc, char **str, size_t len, const char *fmt, va_list ap) { | |
| 144 va_list ap2; | |
| 145 va_copy(ap2, ap); | |
| 146 int ret = vsnprintf(*str, len, fmt, ap); | |
| 147 if ((unsigned) ret >= len) { | |
| 148 unsigned newlen = ret + 1; | |
| 149 char *ptr = cxRealloc(alloc, *str, newlen); | |
| 150 if (ptr) { | |
| 151 int newret = vsnprintf(ptr, newlen, fmt, ap2); | |
| 152 if (newret < 0) { | |
| 153 cxFree(alloc, ptr); | |
| 154 } else { | |
| 155 *str = ptr; | |
| 156 ret = newret; | |
| 157 } | |
| 158 } | |
| 159 } | |
| 160 va_end(ap2); | |
| 161 return ret; | |
| 162 } | |
| 163 | |
| 164 int cx_sprintf_sa(CxAllocator *alloc, char *buf, size_t len, char **str, const char *fmt, ... ) { | |
| 165 va_list ap; | |
| 166 va_start(ap, fmt); | |
| 167 int ret = cx_vsprintf_sa(alloc, buf, len, str, fmt, ap); | |
| 168 va_end(ap); | |
| 169 return ret; | |
| 170 } | |
| 171 | |
| 172 int cx_vsprintf_sa(CxAllocator *alloc, char *buf, size_t len, char **str, const char *fmt, va_list ap) { | |
| 173 va_list ap2; | |
| 174 va_copy(ap2, ap); | |
| 175 int ret = vsnprintf(buf, len, fmt, ap); | |
| 176 *str = buf; | |
| 177 if ((unsigned) ret >= len) { | |
| 178 unsigned newlen = ret + 1; | |
| 179 char *ptr = cxMalloc(alloc, newlen); | |
| 180 if (ptr) { | |
| 181 int newret = vsnprintf(ptr, newlen, fmt, ap2); | |
| 182 if (newret < 0) { | |
| 183 cxFree(alloc, ptr); | |
| 184 } else { | |
| 185 *str = ptr; | |
| 186 ret = newret; | |
| 187 } | |
| 188 } | |
| 189 } | |
| 190 va_end(ap2); | |
| 191 return ret; | |
| 192 } |
