ucx/utils.c

Fri, 01 Jun 2018 09:23:51 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Fri, 01 Jun 2018 09:23:51 +0200
changeset 402
babdf40dd22c
parent 335
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child 505
481802342fdf
permissions
-rw-r--r--

dav-sync pull applies config tag filter now

also changes, that include/exclude filters never lead to file deletion

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2017 Mike Becker, Olaf Wintermann All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #include "ucx/utils.h"
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30
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31 #include <math.h>
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32 #include <stdio.h>
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33 #include <limits.h>
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34 #include <errno.h>
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35
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36 /* COPY FUCNTIONS */
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37 void* ucx_strcpy(const void* s, void* data) {
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38 const char *str = (const char*) s;
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39 size_t n = 1+strlen(str);
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40 char *cpy = (char*) malloc(n);
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41 memcpy(cpy, str, n);
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42 return cpy;
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43 }
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44
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45 void* ucx_memcpy(const void* m, void* n) {
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46 size_t k = *((size_t*)n);
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47 void *cpy = malloc(k);
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48 memcpy(cpy, m, k);
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49 return cpy;
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50 }
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51
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52 size_t ucx_stream_bncopy(void *src, void *dest, read_func readfnc,
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53 write_func writefnc, char* buf, size_t bufsize, size_t n) {
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54 if(n == 0 || bufsize == 0) {
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55 return 0;
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56 }
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57
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58 char *lbuf;
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59 size_t ncp = 0;
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60
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61 if(buf) {
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62 lbuf = buf;
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63 } else {
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64 lbuf = (char*)malloc(bufsize);
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65 if(lbuf == NULL) {
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66 return 0;
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67 }
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68 }
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69
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70 size_t r;
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71 size_t rn = bufsize > n ? n : bufsize;
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72 while((r = readfnc(lbuf, 1, rn, src)) != 0) {
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73 r = writefnc(lbuf, 1, r, dest);
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74 ncp += r;
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75 n -= r;
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76 rn = bufsize > n ? n : bufsize;
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77 if(r == 0 || n == 0) {
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78 break;
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79 }
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80 }
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81
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82 if (lbuf != buf) {
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83 free(lbuf);
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84 }
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85
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86 return ncp;
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87 }
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88
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89 /* COMPARE FUNCTIONS */
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90
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91 int ucx_strcmp(const void *s1, const void *s2, void *data) {
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92 return strcmp((const char*)s1, (const char*)s2);
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93 }
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94
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95 int ucx_strncmp(const void *s1, const void *s2, void *n) {
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96 return strncmp((const char*)s1, (const char*)s2, *((size_t*) n));
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97 }
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98
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99 int ucx_intcmp(const void *i1, const void *i2, void *data) {
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100 int a = *((const int*) i1);
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101 int b = *((const int*) i2);
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102 if (a == b) {
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103 return 0;
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104 } else {
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105 return a < b ? -1 : 1;
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106 }
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107 }
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108
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109 int ucx_floatcmp(const void *f1, const void *f2, void *epsilon) {
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110 float a = *((const float*) f1);
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111 float b = *((const float*) f2);
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112 float e = !epsilon ? 1e-6f : *((float*)epsilon);
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113 if (fabsf(a - b) < e) {
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114 return 0;
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115 } else {
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116 return a < b ? -1 : 1;
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117 }
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118 }
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119
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120 int ucx_doublecmp(const void *d1, const void *d2, void *epsilon) {
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121 double a = *((const double*) d1);
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122 double b = *((const double*) d2);
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123 double e = !epsilon ? 1e-14 : *((double*)epsilon);
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124 if (fabs(a - b) < e) {
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125 return 0;
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126 } else {
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127 return a < b ? -1 : 1;
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128 }
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129 }
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130
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131 int ucx_ptrcmp(const void *ptr1, const void *ptr2, void *data) {
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132 const intptr_t p1 = (const intptr_t) ptr1;
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133 const intptr_t p2 = (const intptr_t) ptr2;
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134 if (p1 == p2) {
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135 return 0;
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136 } else {
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137 return p1 < p2 ? -1 : 1;
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138 }
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139 }
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140
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141 int ucx_memcmp(const void *ptr1, const void *ptr2, void *n) {
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142 return memcmp(ptr1, ptr2, *((size_t*)n));
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143 }
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144
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145 /* PRINTF FUNCTIONS */
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146
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147 #ifdef va_copy
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148 #define UCX_PRINTF_BUFSIZE 256
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149 #else
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150 #pragma message("WARNING: C99 va_copy macro not supported by this platform" \
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151 " - limiting ucx_*printf to 2 KiB")
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152 #define UCX_PRINTF_BUFSIZE 0x800
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153 #endif
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154
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155 int ucx_fprintf(void *stream, write_func wfc, const char *fmt, ...) {
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156 int ret;
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157 va_list ap;
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158 va_start(ap, fmt);
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159 ret = ucx_vfprintf(stream, wfc, fmt, ap);
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160 va_end(ap);
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161 return ret;
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162 }
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163
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164 int ucx_vfprintf(void *stream, write_func wfc, const char *fmt, va_list ap) {
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165 char buf[UCX_PRINTF_BUFSIZE];
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166 #ifdef va_copy
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167 va_list ap2;
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168 va_copy(ap2, ap);
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169 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
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170 if (ret < 0) {
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171 return ret;
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172 } else if (ret < UCX_PRINTF_BUFSIZE) {
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173 return (int)wfc(buf, 1, ret, stream);
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174 } else {
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175 if (ret == INT_MAX) {
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176 errno = ENOMEM;
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177 return -1;
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178 }
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179
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180 int len = ret + 1;
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181 char *newbuf = (char*)malloc(len);
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182 if (!newbuf) {
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183 return -1;
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184 }
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185
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186 ret = vsnprintf(newbuf, len, fmt, ap2);
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187 if (ret > 0) {
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188 ret = (int)wfc(newbuf, 1, ret, stream);
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189 }
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190 free(newbuf);
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191 }
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192 return ret;
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193 #else
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194 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
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195 if (ret < 0) {
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196 return ret;
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197 } else if (ret < UCX_PRINTF_BUFSIZE) {
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198 return (int)wfc(buf, 1, ret, stream);
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199 } else {
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200 errno = ENOMEM;
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201 return -1;
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202 }
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203 #endif
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204 }
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205
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206 sstr_t ucx_asprintf(UcxAllocator *allocator, const char *fmt, ...) {
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207 va_list ap;
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208 sstr_t ret;
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209 va_start(ap, fmt);
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210 ret = ucx_vasprintf(allocator, fmt, ap);
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211 va_end(ap);
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212 return ret;
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213 }
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214
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215 sstr_t ucx_vasprintf(UcxAllocator *a, const char *fmt, va_list ap) {
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216 sstr_t s;
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217 s.ptr = NULL;
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218 s.length = 0;
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219 char buf[UCX_PRINTF_BUFSIZE];
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220 #ifdef va_copy
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221 va_list ap2;
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222 va_copy(ap2, ap);
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223 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
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224 if (ret > 0 && ret < UCX_PRINTF_BUFSIZE) {
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225 s.ptr = (char*)almalloc(a, ret + 1);
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226 if (s.ptr) {
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227 s.length = (size_t)ret;
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228 memcpy(s.ptr, buf, ret);
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229 s.ptr[s.length] = '\0';
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230 }
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231 } else if (ret == INT_MAX) {
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232 errno = ENOMEM;
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233 } else {
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234 int len = ret + 1;
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235 s.ptr = (char*)almalloc(a, len);
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236 if (s.ptr) {
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237 ret = vsnprintf(s.ptr, len, fmt, ap2);
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238 if (ret < 0) {
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239 free(s.ptr);
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240 s.ptr = NULL;
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241 } else {
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242 s.length = (size_t)ret;
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243 }
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244 }
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245 }
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246 #else
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247 int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
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248 if (ret > 0 && ret < UCX_PRINTF_BUFSIZE) {
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249 s.ptr = (char*)almalloc(a, ret + 1);
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250 if (s.ptr) {
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251 s.length = (size_t)ret;
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252 memcpy(s.ptr, buf, ret);
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253 s.ptr[s.length] = '\0';
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254 }
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255 } else {
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256 errno = ENOMEM;
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257 }
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258 #endif
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259 return s;
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260 }

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