src/ucx/properties.c

Mon, 18 Apr 2022 13:17:50 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Mon, 18 Apr 2022 13:17:50 +0200
branch
webdav
changeset 296
78e92337fa4e
parent 254
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permissions
-rw-r--r--

implement pg rmdir

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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.
91
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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/properties.h"
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30
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31 #include <stdio.h>
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32 #include <stdlib.h>
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33 #include <string.h>
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34
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35 UcxProperties *ucx_properties_new() {
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36 UcxProperties *parser = (UcxProperties*)malloc(
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37 sizeof(UcxProperties));
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38 if(!parser) {
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39 return NULL;
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40 }
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41
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42 parser->buffer = NULL;
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43 parser->buflen = 0;
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44 parser->pos = 0;
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45 parser->tmp = NULL;
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46 parser->tmplen = 0;
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47 parser->tmpcap = 0;
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48 parser->error = 0;
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49 parser->delimiter = '=';
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50 parser->comment1 = '#';
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51 parser->comment2 = 0;
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52 parser->comment3 = 0;
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53
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54 return parser;
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55 }
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56
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57 void ucx_properties_free(UcxProperties *parser) {
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58 if(parser->tmp) {
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59 free(parser->tmp);
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60 }
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61 free(parser);
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62 }
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63
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64 void ucx_properties_fill(UcxProperties *parser, char *buf, size_t len) {
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65 parser->buffer = buf;
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66 parser->buflen = len;
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67 parser->pos = 0;
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68 }
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69
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70 static void parser_tmp_append(UcxProperties *parser, char *buf, size_t len) {
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71 if(parser->tmpcap - parser->tmplen < len) {
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72 size_t newcap = parser->tmpcap + len + 64;
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73 parser->tmp = (char*)realloc(parser->tmp, newcap);
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74 parser->tmpcap = newcap;
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75 }
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76 memcpy(parser->tmp + parser->tmplen, buf, len);
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77 parser->tmplen += len;
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78 }
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79
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80 int ucx_properties_next(UcxProperties *parser, sstr_t *name, sstr_t *value) {
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81 if(parser->tmplen > 0) {
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82 char *buf = parser->buffer + parser->pos;
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83 size_t len = parser->buflen - parser->pos;
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84 sstr_t str = sstrn(buf, len);
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85 sstr_t nl = sstrchr(str, '\n');
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86 if(nl.ptr) {
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87 size_t newlen = (size_t)(nl.ptr - buf) + 1;
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88 parser_tmp_append(parser, buf, newlen);
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89 // the tmp buffer contains exactly one line now
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90
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91 char *orig_buf = parser->buffer;
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92 size_t orig_len = parser->buflen;
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93
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94 parser->buffer = parser->tmp;
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95 parser->buflen = parser->tmplen;
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96 parser->pos = 0;
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97 parser->tmp = NULL;
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98 parser->tmpcap = 0;
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99 parser->tmplen = 0;
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100 // run ucx_properties_next with the tmp buffer as main buffer
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101 int ret = ucx_properties_next(parser, name, value);
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102
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103 // restore original buffer
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104 parser->tmp = parser->buffer;
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105 parser->buffer = orig_buf;
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106 parser->buflen = orig_len;
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107 parser->pos = newlen;
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108
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109 /*
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110 * if ret == 0 the tmp buffer contained just space or a comment
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111 * we parse again with the original buffer to get a name/value
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112 * or a new tmp buffer
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113 */
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114 return ret ? ret : ucx_properties_next(parser, name, value);
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115 } else {
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116 parser_tmp_append(parser, buf, len);
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117 return 0;
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118 }
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119 } else if(parser->tmp) {
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120 free(parser->tmp);
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121 parser->tmp = NULL;
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122 }
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123
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124 char comment1 = parser->comment1;
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125 char comment2 = parser->comment2;
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126 char comment3 = parser->comment3;
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127 char delimiter = parser->delimiter;
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128
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129 // get one line and parse it
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130 while(parser->pos < parser->buflen) {
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131 char *buf = parser->buffer + parser->pos;
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132 size_t len = parser->buflen - parser->pos;
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133
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134 /*
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135 * First we check if we have at least one line. We also get indices of
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136 * delimiter and comment chars
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137 */
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138 size_t delimiter_index = 0;
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139 size_t comment_index = 0;
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140 int has_comment = 0;
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141
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142 size_t i = 0;
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143 char c = 0;
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144 for(;i<len;i++) {
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145 c = buf[i];
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146 if(c == comment1 || c == comment2 || c == comment3) {
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147 if(comment_index == 0) {
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148 comment_index = i;
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149 has_comment = 1;
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150 }
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151 } else if(c == delimiter) {
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152 if(delimiter_index == 0 && !has_comment) {
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153 delimiter_index = i;
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154 }
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155 } else if(c == '\n') {
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156 break;
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157 }
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158 }
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159
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160 if(c != '\n') {
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161 // we don't have enough data for a line
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162 // store remaining bytes in temporary buffer for next round
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163 parser->tmpcap = len + 128;
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164 parser->tmp = (char*)malloc(parser->tmpcap);
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165 parser->tmplen = len;
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166 memcpy(parser->tmp, buf, len);
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167 return 0;
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168 }
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169
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170 sstr_t line = has_comment ? sstrn(buf, comment_index) : sstrn(buf, i);
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171 // check line
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172 if(delimiter_index == 0) {
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173 line = sstrtrim(line);
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174 if(line.length != 0) {
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175 parser->error = 1;
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176 }
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177 } else {
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178 sstr_t n = sstrn(buf, delimiter_index);
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179 sstr_t v = sstrn(
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180 buf + delimiter_index + 1,
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181 line.length - delimiter_index - 1);
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182 n = sstrtrim(n);
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183 v = sstrtrim(v);
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184 if(n.length != 0 || v.length != 0) {
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185 *name = n;
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186 *value = v;
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187 parser->pos += i + 1;
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188 return 1;
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189 } else {
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190 parser->error = 1;
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191 }
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192 }
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parents:
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193
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194 parser->pos += i + 1;
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195 }
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parents:
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196
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197 return 0;
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parents:
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198 }
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parents:
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199
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200 int ucx_properties2map(UcxProperties *parser, UcxMap *map) {
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201 sstr_t name;
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202 sstr_t value;
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parents:
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203 while(ucx_properties_next(parser, &name, &value)) {
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204 value = sstrdup_a(map->allocator, value);
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parents:
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205 if(!value.ptr) {
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parents:
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206 return 1;
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parents:
diff changeset
207 }
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parents:
diff changeset
208 if(ucx_map_sstr_put(map, name, value.ptr)) {
99
b9a6af0ae41a ucx update
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parents: 91
diff changeset
209 alfree(map->allocator, value.ptr);
91
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parents:
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210 return 1;
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parents:
diff changeset
211 }
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parents:
diff changeset
212 }
fac51f87def0 ucx update
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parents:
diff changeset
213 if (parser->error) {
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parents:
diff changeset
214 return parser->error;
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parents:
diff changeset
215 } else {
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parents:
diff changeset
216 return 0;
fac51f87def0 ucx update
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parents:
diff changeset
217 }
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
218 }
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
219
fac51f87def0 ucx update
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parents:
diff changeset
220 // buffer size is documented - change doc, when you change bufsize!
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parents:
diff changeset
221 #define UCX_PROPLOAD_BUFSIZE 1024
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parents:
diff changeset
222 int ucx_properties_load(UcxMap *map, FILE *file) {
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parents:
diff changeset
223 UcxProperties *parser = ucx_properties_new();
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parents:
diff changeset
224 if(!(parser && map && file)) {
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parents:
diff changeset
225 return 1;
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
226 }
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
227
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
228 int error = 0;
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parents:
diff changeset
229 size_t r;
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parents:
diff changeset
230 char buf[UCX_PROPLOAD_BUFSIZE];
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parents:
diff changeset
231 while((r = fread(buf, 1, UCX_PROPLOAD_BUFSIZE, file)) != 0) {
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parents:
diff changeset
232 ucx_properties_fill(parser, buf, r);
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parents:
diff changeset
233 error = ucx_properties2map(parser, map);
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parents:
diff changeset
234 if (error) {
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
235 break;
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
236 }
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
237 }
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
238 ucx_properties_free(parser);
fac51f87def0 ucx update
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parents:
diff changeset
239 return error;
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
240 }
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
241
fac51f87def0 ucx update
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parents:
diff changeset
242 int ucx_properties_store(UcxMap *map, FILE *file) {
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
243 UcxMapIterator iter = ucx_map_iterator(map);
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
244 void *v;
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parents:
diff changeset
245 sstr_t value;
fac51f87def0 ucx update
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parents:
diff changeset
246 size_t written;
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parents:
diff changeset
247
fac51f87def0 ucx update
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parents:
diff changeset
248 UCX_MAP_FOREACH(k, v, iter) {
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
249 value = sstr((char*)v);
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parents:
diff changeset
250
fac51f87def0 ucx update
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parents:
diff changeset
251 written = 0;
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parents:
diff changeset
252 written += fwrite(k.data, 1, k.len, file);
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parents:
diff changeset
253 written += fwrite(" = ", 1, 3, file);
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parents:
diff changeset
254 written += fwrite(value.ptr, 1, value.length, file);
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
255 written += fwrite("\n", 1, 1, file);
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
256
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
257 if (written != k.len + value.length + 4) {
fac51f87def0 ucx update
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parents:
diff changeset
258 return 1;
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
259 }
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
260 }
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
261
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
262 return 0;
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
263 }
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
264

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