libidav/davqlexec.c

Sat, 02 May 2015 18:52:04 +0200

author
Mike Becker <universe@uap-core.de>
date
Sat, 02 May 2015 18:52:04 +0200
changeset 105
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parent 104
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child 123
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permissions
-rw-r--r--

fixed control flow in int_cmd + committed testcase (enable with #define DO_THE_TEST)

104
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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 2015 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 <stdio.h>
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30 #include <stdlib.h>
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31 #include <string.h>
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32
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33 #include <ucx/utils.h>
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34
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35 #include "davqlexec.h"
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36
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37 DavQLResult* dav_statement_exec(DavSession *sn, DavQLStatement *st, ...) {
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38 va_list ap;
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39 va_start(ap, st);
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40 DavQLResult *result = dav_statement_execv(sn, st, ap);
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41 va_end(ap);
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42 return result;
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43 }
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44
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45 DavQLResult* dav_statement_execv(DavSession *sn, DavQLStatement *st, va_list ap) {
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46 DavQLResult *result = dav_session_malloc(sn, sizeof(DavQLResult));
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47 result->result = NULL;
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48 result->status = 1;
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49
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50 // make sure the statement was successfully parsed
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51 if(st->type == DAVQL_ERROR) {
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52 return result;
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53 }
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54
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55 // get path string
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56 davqlerror_t error;
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57 UcxBuffer *path = dav_path_string(st->path, ap, &error);
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58
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59 if(st->type == DAVQL_GET) {
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60 dav_exec_get(sn, st, path->space, ap);
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61 } else {
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62 // TODO
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63 }
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64
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65 return result;
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66 }
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67
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68 UcxBuffer* dav_path_string(sstr_t pathfmt, va_list ap, davqlerror_t *error) {
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69 UcxBuffer *path = ucx_buffer_new(NULL, 128, UCX_BUFFER_AUTOEXTEND);
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70
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71 int placeholder = 0;
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72 for(int i=0;i<pathfmt.length;i++) {
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73 char c = pathfmt.ptr[i];
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74 if(placeholder) {
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75 if(c == '%') {
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76 // no placeholder, %% transposes to %
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77 ucx_buffer_putc(path, c);
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78 } else {
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79 // detect placeholder type and insert arg
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80 int err = 0;
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81 switch(c) {
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82 case 's': {
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83 char *arg = va_arg(ap, char*);
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84 ucx_buffer_puts(path, arg);
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85 break;
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86 }
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87 case 'd': {
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88 int arg = va_arg(ap, int);
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89 ucx_bprintf(path, "%d", arg);
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90 break;
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91 }
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92 case 'u': {
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93 unsigned int arg = va_arg(ap, unsigned int);
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94 ucx_bprintf(path, "%u", arg);
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95 break;
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96 }
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97 case 't': {
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98 // time arguments doesn't make any sense in a path
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99 *error = DAVQL_UNSUPPORTED_FORMATCHAR;
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100 err = 1;
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101 break;
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102 }
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103 default: {
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104 *error = DAVQL_UNKNOWN_FORMATCHAR;
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105 err = 1;
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106 }
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107 }
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108 if(err) {
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109 ucx_buffer_free(path);
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110 return NULL;
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111 }
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112 }
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113 placeholder = 0;
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114 } else {
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115 if(c == '%') {
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116 placeholder = 1;
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117 } else {
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118 ucx_buffer_putc(path, c);
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119 }
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120 }
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121 }
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122 ucx_buffer_putc(path, '\0');
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123 *error = DAVQL_OK;
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124 return path;
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125 }
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126
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127 void dav_exec_get(DavSession *sn, DavQLStatement *st, char* path, va_list ap) {
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128 // execute a davql get statement
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129
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130 // TODO: get property list
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131
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132
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133 }
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134
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135 int dav_eval_lexpr(DavResource *res, DavQLExpression *lexpr) {
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136
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137 }

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