1 | /*
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2 | * MGPassesWrapperImpl.c
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3 | * Copyright (C) 2002 New Zealand Digital Library, http://www.nzdl.org
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4 | *
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5 | * This program is free software; you can redistribute it and/or modify
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6 | * it under the terms of the GNU General Public License as published by
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7 | * the Free Software Foundation; either version 2 of the License, or
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8 | * (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program; if not, write to the Free Software
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17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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18 | */
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19 |
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20 |
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21 | #include <jni.h>
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22 | #include <assert.h>
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23 | #include "sysfuncs.h"
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24 | #include "org_greenstone_mgpp_MGPPPassesWrapper.h"
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25 |
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26 | #include "mgpp_passes_4jni.h"
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27 | #include "mg_files.h"
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28 |
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29 | /* if we need to use java objects, we should initialise their field ids here*/
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30 | JNIEXPORT void JNICALL
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31 | Java_org_greenstone_mgpp_MGPPPassesWrapper_initIDs(JNIEnv *j_env, jclass j_cls)
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32 | {
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33 | return;
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34 | }
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35 |
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36 | JNIEXPORT jboolean JNICALL
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37 | Java_org_greenstone_mgpp_MGPPPassesWrapper_initCSide(JNIEnv *j_env, jobject j_obj)
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38 | {
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39 | clear_variables();
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40 | return true;
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41 | }
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42 |
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43 | /* add a pass type T1, T2, I1, I2, S */
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44 | JNIEXPORT void JNICALL
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45 | Java_org_greenstone_mgpp_MGPPPassesWrapper_addPass(JNIEnv *j_env,
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46 | jobject j_obj,
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47 | jchar j_pass_type,
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48 | jchar j_pass_num)
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49 | {
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50 | /* get the level as a c char */
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51 | const char pass_type = j_pass_type;
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52 | const char pass_num = j_pass_num;
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53 | add_pass(pass_type, pass_num);
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54 |
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55 | }
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56 |
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57 | /* Set the filename */
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58 | JNIEXPORT void JNICALL
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59 | Java_org_greenstone_mgpp_MGPPPassesWrapper_setFileName(JNIEnv *j_env,
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60 | jobject j_obj,
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61 | jstring j_filename)
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62 | {
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63 | /* Get the filename as a C string */
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64 | const char* filename = j_env->GetStringUTFChars(j_filename, NULL);
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65 |
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66 | assert(filename != NULL);
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67 | set_filename(filename);
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68 |
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69 | /* Release the string */
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70 | j_env->ReleaseStringUTFChars(j_filename, filename);
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71 |
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72 | }
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73 |
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74 | /* Set the base path */
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75 | JNIEXPORT void JNICALL
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76 | Java_org_greenstone_mgpp_MGPPPassesWrapper_setBasePath(JNIEnv *j_env,
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77 | jobject j_obj,
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78 | jstring j_basepath)
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79 | {
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80 | /* Get the base_path as a C string */
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81 | const char* basepath = j_env->GetStringUTFChars(j_basepath, NULL);
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82 | assert(basepath != NULL);
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83 |
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84 | set_basepath(basepath);
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85 |
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86 | /* Release the string */
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87 | j_env->ReleaseStringUTFChars(j_basepath, basepath);
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88 |
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89 | }
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90 |
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91 | /* set the Document tag */
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92 | JNIEXPORT void JNICALL
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93 | Java_org_greenstone_mgpp_MGPPPassesWrapper_setDocumentTag(JNIEnv *j_env,
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94 | jobject j_obj,
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95 | jstring j_tag)
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96 | {
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97 | const char* tag = j_env->GetStringUTFChars(j_tag, NULL);
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98 |
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99 | set_document_tag(tag);
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100 | /* Release the string */
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101 | j_env->ReleaseStringUTFChars(j_tag, tag);
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102 |
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103 |
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104 | }
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105 |
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106 | /* add a level tag */
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107 | JNIEXPORT void JNICALL
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108 | Java_org_greenstone_mgpp_MGPPPassesWrapper_addLevelTag(JNIEnv *j_env,
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109 | jobject j_obj,
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110 | jstring j_tag)
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111 | {
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112 | const char* tag = j_env->GetStringUTFChars(j_tag, NULL);
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113 | add_level_tag(tag);
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114 |
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115 | /* Release the string */
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116 | j_env->ReleaseStringUTFChars(j_tag, tag);
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117 |
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118 | }
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119 |
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120 | /* set the index level (default word level) */
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121 | JNIEXPORT void JNICALL
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122 | Java_org_greenstone_mgpp_MGPPPassesWrapper_setIndexLevel(JNIEnv *j_env,
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123 | jobject j_obj,
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124 | jstring j_tag)
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125 | {
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126 | const char* tag = j_env->GetStringUTFChars(j_tag, NULL);
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127 | set_index_level(tag);
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128 |
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129 | /* Release the string */
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130 | j_env->ReleaseStringUTFChars(j_tag, tag);
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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 |
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136 | /** Maximum amount of memory to use for the index pass-2 file
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137 | inversion in megabytes.
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138 | */
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139 | JNIEXPORT void JNICALL
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140 | Java_org_greenstone_mgpp_MGPPPassesWrapper_setInversionMemLimit(JNIEnv *j_env,
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141 | jobject j_obj,
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142 | jint j_limit) {
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143 | int limit = j_limit;
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144 | set_inversion_limit(limit);
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145 | }
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146 |
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147 |
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148 | /* initialise the pass through the documents. must be called after all
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149 | the set methods
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150 | */
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151 | JNIEXPORT jboolean JNICALL
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152 | Java_org_greenstone_mgpp_MGPPPassesWrapper_init(JNIEnv *j_env,
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153 | jobject j_obj) {
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154 |
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155 | init_driver();
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156 | return true;
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157 | }
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158 |
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159 |
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160 | /* process one or more documents */
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161 | JNIEXPORT jboolean JNICALL
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162 | Java_org_greenstone_mgpp_MGPPPassesWrapper_processMGPPDocument(JNIEnv *j_env,
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163 | jobject j_obj,
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164 | jbyteArray j_doc_text) {
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165 | /* Get the text as a C string */
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166 | int length = j_env->GetArrayLength(j_doc_text);
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167 | u_char * text_buffer = (u_char *)j_env->GetByteArrayElements(j_doc_text, NULL);
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168 | process_document(text_buffer, length);
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169 | /* Release the string */
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170 | // why doesn't this work in c++ when it works in C?????
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171 | //j_env->ReleaseByteArrayElements(j_doc_text, text_buffer, 0);
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172 | return true;
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173 | }
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174 |
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175 | /* finalise the pass through the documents */
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176 | JNIEXPORT jboolean JNICALL
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177 | Java_org_greenstone_mgpp_MGPPPassesWrapper_finish(JNIEnv *j_env,
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178 | jobject j_obj) {
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179 |
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180 | finalise_driver();
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181 | return true;
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182 | }
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183 |
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184 | /** get the exit value once finished */
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185 | JNIEXPORT jint JNICALL
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186 | Java_org_greenstone_mgpp_MGPPPassesWrapper_exitValue(JNIEnv *j_env,
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187 | jobject j_obj) {
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188 |
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189 | return get_exit_value();
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190 | }
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