1 | /*
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2 | * MGPPRetrieveWrapperImpl.c
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3 | * Copyright (C) 2007 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 | #ifdef __WIN32__
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21 | #include <win32cfg.h>
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22 | #endif
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23 |
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24 | #include <jni.h>
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25 |
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26 | #ifdef __MINGW32__
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27 |
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28 | /* Cross compiling for Windows
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29 | Want the type definitions in *win32* version of jni_md.h but
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30 | this then leads to C-mangled style functions which we *don't*
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31 | want. The following achieves this */
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32 |
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33 | #undef JNIEXPORT
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34 | #undef JNIIMPORT
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35 | #undef JNICALL
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36 |
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37 | #define JNIEXPORT
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38 | #define JNIIMPORT
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39 | #define JNICALL
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40 | #endif
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41 |
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42 | #include "org_greenstone_mgpp_MGPPRetrieveWrapper.h"
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43 | #include "TextGet.h"
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44 |
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45 |
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46 | //****************************************************
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47 | // retrieve a document
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48 | //****************************************************
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49 |
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50 | /* returns a document from mgpp as a string
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51 | Note: TextData isn't cached - just reloaded each time
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52 | */
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53 | JNIEXPORT jstring JNICALL
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54 | Java_org_greenstone_mgpp_MGPPRetrieveWrapper_getDocument (JNIEnv *j_env,
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55 | jobject j_obj, jstring j_text_name, jstring j_level, jlong j_docnum) {
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56 |
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57 | #ifdef __WIN32__
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58 | const char* base_dir = "";
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59 | #else
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60 | const char* base_dir = "/";
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61 | #endif
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62 |
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63 | const char * text_name = j_env->GetStringUTFChars(j_text_name, NULL);
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64 | if (text_name==NULL) {
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65 | return NULL;
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66 | }
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67 |
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68 | const char * level = j_env->GetStringUTFChars( j_level, NULL);
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69 | if (level==NULL) {
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70 | j_env->ReleaseStringUTFChars(j_text_name, text_name);
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71 | return NULL;
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72 | }
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73 |
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74 | // does this work alright? j_docnum is a long (64 bit)
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75 | mg_u_long docnum = j_docnum;
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76 | TextData td;
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77 |
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78 | // cast to char* otherwise complains about const
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79 | td.LoadData((char *)base_dir, (char *)text_name);
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80 |
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81 | UCArray mg_level;
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82 | SetCStr(mg_level, level);
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83 | UCArray docText;
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84 | docText.clear();
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85 | // get the actual text
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86 | if (!GetDocText(td, mg_level, docnum, docText)) {
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87 | cerr <<"MGPP JNI: couldn't retrieve doc text"<<endl;
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88 | }
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89 |
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90 | td.UnloadData();
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91 |
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92 | char * doc = GetCStr(docText);
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93 | jstring result = j_env->NewStringUTF(doc);
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94 | // release any gets
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95 | j_env->ReleaseStringUTFChars(j_text_name, text_name);
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96 | j_env->ReleaseStringUTFChars(j_level, level);
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97 |
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98 | // free any C++ stuff
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99 | delete doc;
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100 |
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101 | return result;
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102 |
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103 | }
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