#include "StringUtils.h" #include <string.h> JNIEXPORT jboolean JNICALL Java_StringUtils_isAlpha(JNIEnv *env, jclass clazz, jstring jStr) { jboolean ret = JNI_TRUE; char *sp = NULL, *s = NULL; if (!jStr) return JNI_FALSE; s = (char*)(*env)->GetStringUTFChars(env, jStr, 0); sp = s + strlen(s); if (sp <= s) ret = JNI_FALSE; do { if (!isalpha(*(--sp))) ret = JNI_FALSE; } while (sp > s); (*env)->ReleaseStringUTFChars(env, jStr, s); return ret; } JNIEXPORT jboolean JNICALL Java_StringUtils_isEmpty(JNIEnv *env, jclass clazz, jstring jStr) { jboolean ret = JNI_TRUE; char *sp = NULL, *s = NULL; if (!jStr) return JNI_TRUE; s = (char*)(*env)->GetStringUTFChars(env, jStr, 0); sp = s + strlen(s); if (sp <= s) ret = JNI_TRUE; do { if (!isspace(*(--sp))) ret = JNI_FALSE; } while (sp > s); (*env)->ReleaseStringUTFChars(env, jStr, s); return ret; }