Commit | Line | Data |
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920dae64 AT |
1 | /* |
2 | * SWIG Typemap library for Java | |
3 | * Various useful typemaps. | |
4 | * | |
5 | */ | |
6 | ||
7 | /* | |
8 | * char **STRING_ARRAY typemaps. | |
9 | * These typemaps are for C String arrays which are NULL terminated. | |
10 | * char *values[] = { "one", "two", "three", NULL }; // note NULL | |
11 | * char ** is mapped to a Java String[]. | |
12 | * | |
13 | * Example usage wrapping: | |
14 | * %apply char **STRING_ARRAY { char **input }; | |
15 | * char ** foo(char **input); | |
16 | * | |
17 | * Java usage: | |
18 | * String numbers[] = { "one", "two", "three" }; | |
19 | * String[] ret = modulename.foo( numbers }; | |
20 | */ | |
21 | %typemap(jni) char **STRING_ARRAY "jobjectArray" | |
22 | %typemap(jtype) char **STRING_ARRAY "String[]" | |
23 | %typemap(jstype) char **STRING_ARRAY "String[]" | |
24 | %typemap(in) char **STRING_ARRAY (jint size) { | |
25 | int i = 0; | |
26 | size = JCALL1(GetArrayLength, jenv, $input); | |
27 | #ifdef __cplusplus | |
28 | $1 = new char*[size+1]; | |
29 | #else | |
30 | $1 = (char **)calloc(size+1, sizeof(char *)); | |
31 | #endif | |
32 | for (i = 0; i<size; i++) { | |
33 | jstring j_string = (jstring)JCALL2(GetObjectArrayElement, jenv, $input, i); | |
34 | const char *c_string = JCALL2(GetStringUTFChars, jenv, j_string, 0); | |
35 | #ifdef __cplusplus | |
36 | $1[i] = new char [strlen(c_string)+1]; | |
37 | #else | |
38 | $1[i] = (char *)calloc(strlen(c_string)+1, sizeof(const char *)); | |
39 | #endif | |
40 | strcpy($1[i], c_string); | |
41 | JCALL2(ReleaseStringUTFChars, jenv, j_string, c_string); | |
42 | JCALL1(DeleteLocalRef, jenv, j_string); | |
43 | } | |
44 | $1[i] = 0; | |
45 | } | |
46 | ||
47 | %typemap(freearg) char **STRING_ARRAY { | |
48 | int i; | |
49 | for (i=0; i<size$argnum-1; i++) | |
50 | #ifdef __cplusplus | |
51 | delete[] $1[i]; | |
52 | delete[] $1; | |
53 | #else | |
54 | free($1[i]); | |
55 | free($1); | |
56 | #endif | |
57 | } | |
58 | ||
59 | %typemap(out) char **STRING_ARRAY (char *s) { | |
60 | int i; | |
61 | int len=0; | |
62 | jstring temp_string; | |
63 | const jclass clazz = JCALL1(FindClass, jenv, "java/lang/String"); | |
64 | ||
65 | while ($1[len]) len++; | |
66 | jresult = JCALL3(NewObjectArray, jenv, len, clazz, NULL); | |
67 | /* exception checking omitted */ | |
68 | ||
69 | for (i=0; i<len; i++) { | |
70 | temp_string = JCALL1(NewStringUTF, jenv, *result++); | |
71 | JCALL3(SetObjectArrayElement, jenv, jresult, i, temp_string); | |
72 | JCALL1(DeleteLocalRef, jenv, temp_string); | |
73 | } | |
74 | } | |
75 | ||
76 | %typemap(javain) char **STRING_ARRAY "$javainput" | |
77 | %typemap(javaout) char **STRING_ARRAY { | |
78 | return $jnicall; | |
79 | } | |
80 | ||
81 | /* | |
82 | * char **STRING_OUT typemaps. | |
83 | * These are typemaps for returning strings when using a C char ** parameter type. | |
84 | * The returned string appears in the 1st element of the passed in Java String array. | |
85 | * | |
86 | * Example usage wrapping: | |
87 | * void foo(char **string_out); | |
88 | * | |
89 | * Java usage: | |
90 | * String stringOutArray[] = { "" }; | |
91 | * modulename.foo(stringOutArray); | |
92 | * System.out.println( stringOutArray[0] ); | |
93 | */ | |
94 | %typemap(jni) char **STRING_OUT "jobjectArray" | |
95 | %typemap(jtype) char **STRING_OUT "String[]" | |
96 | %typemap(jstype) char **STRING_OUT "String[]" | |
97 | %typemap(javain) char **STRING_OUT "$javainput" | |
98 | ||
99 | %typemap(in) char **STRING_OUT($*1_ltype temp) { | |
100 | if (!$input) { | |
101 | SWIG_JavaThrowException(jenv, SWIG_JavaNullPointerException, "array null"); | |
102 | return $null; | |
103 | } | |
104 | if (JCALL1(GetArrayLength, jenv, $input) == 0) { | |
105 | SWIG_JavaThrowException(jenv, SWIG_JavaIndexOutOfBoundsException, "Array must contain at least 1 element"); | |
106 | return $null; | |
107 | } | |
108 | $1 = &temp; | |
109 | } | |
110 | ||
111 | %typemap(argout) char **STRING_OUT { | |
112 | jstring jnewstring = NULL; | |
113 | if($1) { | |
114 | jnewstring = JCALL1(NewStringUTF, jenv, *$1); | |
115 | } | |
116 | JCALL3(SetObjectArrayElement, jenv, $input, 0, jnewstring); | |
117 | } | |
118 | ||
119 | /* | |
120 | * char *BYTE typemaps. | |
121 | * These are input typemaps for mapping a Java byte[] array to a C char array. | |
122 | * Note that as a Java array is used and thus passeed by reference, the C routine | |
123 | * can return data to Java via the parameter. | |
124 | * | |
125 | * Example usage wrapping: | |
126 | * void foo(char *array); | |
127 | * | |
128 | * Java usage: | |
129 | * byte b[] = new byte[20]; | |
130 | * modulename.foo(b); | |
131 | */ | |
132 | %typemap(jni) char *BYTE "jbyteArray" | |
133 | %typemap(jtype) char *BYTE "byte[]" | |
134 | %typemap(jstype) char *BYTE "byte[]" | |
135 | %typemap(in) char *BYTE { | |
136 | $1 = (char *) JCALL2(GetByteArrayElements, jenv, $input, 0); | |
137 | } | |
138 | ||
139 | %typemap(argout) char *BYTE { | |
140 | JCALL3(ReleaseByteArrayElements, jenv, $input, (jbyte *) $1, 0); | |
141 | } | |
142 | ||
143 | %typemap(javain) char *BYTE "$javainput" | |
144 | ||
145 | /* Prevent default freearg typemap from being used */ | |
146 | %typemap(freearg) char *BYTE "" | |
147 |