initial java interface commit: IT DOES NOT WORK

java/javacurl.c

@@ -0,0 +1,157 @@
+
+#include <curl/curl.h> /* libcurl header */
+#include "CurlGlue.h"  /* the JNI-generated glue header file */
+
+/*
+ * This is a private struct allocated for every 'CurlGlue' object.
+ */
+struct javacurl {
+  void *libcurl;
+  void *whatever;
+  struct writecallback {
+    jmethodID mid;
+    JNIEnv *java;
+    jclass cls;
+    jobject obj;
+  } write;
+};
+
+JNIEXPORT jint JNICALL Java_CurlGlue_jni_1init(JNIEnv *java,
+                                               jobject myself)
+{
+  void *libhandle;
+  struct javacurl *jcurl=NULL;
+
+  libhandle = curl_easy_init();
+
+  if(libhandle) {
+    jcurl=(struct javacurl *)malloc(sizeof(struct javacurl));
+    if(jcurl) {
+      memset(jcurl, 0, sizeof(struct javacurl));
+      jcurl->libcurl = libhandle;
+
+    }
+    else {
+      curl_easy_cleanup(libhandle);
+      return (jint)0;
+    }
+  }
+
+  return (jint) jcurl; /* nasty typecast */
+}
+
+JNIEXPORT void JNICALL Java_CurlGlue_jni_1cleanup(JNIEnv *java,
+                                                  jobject myself,
+                                                  jint jcurl)
+{
+  void *handle=(void *)((struct javacurl*)jcurl)->libcurl;
+
+  curl_easy_cleanup(handle); /* cleanup libcurl stuff */
+
+  free((void *)jcurl); /* free the struct too */
+}
+
+/*
+ * setopt() int + string
+ */
+JNIEXPORT jint JNICALL Java_CurlGlue_jni_1setopt__IILjava_lang_String_2
+  (JNIEnv *java, jobject myself, jint jcurl, jint option, jstring value)
+{
+  /* get the actual string C-style */
+  const char *str = (*java)->GetStringUTFChars(java, value, 0);
+
+  void *handle = (void *)((struct javacurl*)jcurl)->libcurl;
+
+  puts("setopt int + string");
+  
+  return (jint)curl_easy_setopt(handle, (CURLoption)option, str);
+
+}
+
+/*
+ * setopt() int + int 
+ */
+JNIEXPORT jint JNICALL Java_CurlGlue_jni_1setopt__III
+  (JNIEnv *java, jobject myself, jint jcurl, jint option, jint value)
+{
+  void *handle = (void *)((struct javacurl*)jcurl)->libcurl;
+
+  puts("setopt int + int");
+
+  return (jint)curl_easy_setopt(handle, (CURLoption)option, value);
+}
+
+static int javacurl_write_callback(void *ptr,
+                                   size_t size,
+                                   size_t nmemb,
+                                   FILE  *stream)
+{
+  struct javacurl *curl = (struct javacurl *)stream;
+  size_t realsize = size * nmemb;
+  JNIEnv *java = curl->write.java;
+  jbyteArray jb;
+  int ret;
+
+  jb=(*java)->NewByteArray(java, realsize);
+  (*java)->SetByteArrayRegion(java, jb, 0, 
+                              realsize, (jbyte *)ptr);
+
+  ret = (*java)->CallIntMethod(java,
+                               curl->write.obj,
+                               curl->write.mid,
+                               jb);
+
+  return realsize;
+}
+
+/*
+ * setopt() int + object
+ */
+
+JNIEXPORT jint JNICALL Java_CurlGlue_jni_1setopt__IILCurlWrite_2
+  (JNIEnv *java, jobject myself, jint jcurl, jint option, jobject value)
+{
+  jclass cls = (*java)->GetObjectClass(java, value);
+  jmethodID mid;
+  struct javacurl *curl = (struct javacurl *)jcurl;
+
+  printf("setopt int + object, option = %d cls= %p\n", option, cls);
+
+  switch(option) {
+  case CURLOPT_WRITEFUNCTION:
+    /* this is the write callback */
+    mid = (*java)->GetMethodID(java, cls, "handleString",
+                               "([B)I");
+    if(!mid) {
+      /* no callback method found */
+      puts("no callback method found");
+      return 0;
+    }
+    curl->write.mid = mid;
+    curl->write.java = java;
+    curl->write.cls = cls;
+    curl->write.obj = value;
+
+    puts("setopt write callback and write file pointer");
+
+    curl_easy_setopt(curl->libcurl, CURLOPT_WRITEFUNCTION,
+                     javacurl_write_callback);
+    curl_easy_setopt(curl->libcurl, CURLOPT_FILE,
+                     curl);
+    break;
+  }
+  return 0;
+}
+
+JNIEXPORT jint JNICALL Java_CurlGlue_getinfo
+  (JNIEnv *java, jobject value)
+{
+    return 0;
+}
+
+JNIEXPORT jint JNICALL Java_CurlGlue_jni_1perform
+  (JNIEnv *java, jobject myself, jint jcurl)
+{
+  void *handle=(void *)((struct javacurl*)jcurl)->libcurl;
+  return (jint)curl_easy_perform(handle);
+}