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/* vim: set ts=4 sw=4 expandtab cindent: */
#define LOG_TAG "ConnectBot.util.EastAsianWidth"
#include <jni.h>
#include <android/log.h>
#include <utypes.h>
#include <uchar.h>
#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR , LOG_TAG, __VA_ARGS__)
/**
* org.connectbot.util.EastAsianWidth
*/
Java_org_connectbot_util_EastAsianWidth_measure(JNIEnv *env, jobject thiz,
jcharArray buffer, jint start, jint len, jbyteArray attributes, jboolean eastAsian) {
UErrorCode errorCode = U_ZERO_ERROR;
jint end = start + len;
jint i = start;
UChar32 c;
const jchar *uBuffer = (jchar *) (*env)->GetPrimitiveArrayCritical(env, buffer, (jboolean *)0);
if (!uBuffer) {
LOGE("Could not obtain source buffer");
errorCode = U_ILLEGAL_ARGUMENT_ERROR;
goto exit;
}
jbyte *uAttributes = (jbyte *) (*env)->GetPrimitiveArrayCritical(env, attributes, (jboolean *)0);
if (!uAttributes) {
LOGE("Could not obtain attribute array");
errorCode = U_ILLEGAL_ARGUMENT_ERROR;
goto exit;
}
while (i < end) {
U16_NEXT(uBuffer, i, end, c);
UEastAsianWidth ea = (UEastAsianWidth) u_getIntPropertyValue(c, UCHAR_EAST_ASIAN_WIDTH);
switch (ea) {
case U_EA_FULLWIDTH:
case U_EA_WIDE:
uAttributes[i] = 1;
break;
case U_EA_HALFWIDTH:
case U_EA_NARROW:
uAttributes[i] = 0;
break;
case U_EA_NEUTRAL:
case U_EA_AMBIGUOUS:
default:
if (eastAsian)
uAttributes[i] = 1;
else
uAttributes[i] = 0;
break;
}
}
exit:
if (uBuffer)
(*env)->ReleasePrimitiveArrayCritical(env, buffer, (jchar *)uBuffer, JNI_ABORT);
if (uAttributes)
(*env)->ReleasePrimitiveArrayCritical(env, attributes, uAttributes, JNI_ABORT);
return errorCode;
}
jint JNI_OnLoad(JavaVM* vm, void* reserved) {
JNIEnv* env = NULL;
jint result = -1;
jclass clazz;
if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_4) != JNI_OK) {
LOGE("ERROR: GetEnv failed\n");
goto bail;
}
result = JNI_VERSION_1_4;
bail:
return result;
}
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