供參考學習~

下載鏈接（沒法更新的）：https://download.csdn.net/download/sxf1061700625/13090575

stringUtil.h

#ifndef _STRINGUTIL_H #define _STRINGUTIL_H#define true 1 #define false 0 typedef char* String; typedef char** Array_t; typedef unsigned char Bool;typedef struct {char* (*addExtra)(char*, char*);char* (*add)(char*, char*);char* (*newString)(int, ...);void (*delString)(char*);int (*split)(char*, char*, Array_t*);int (*splitExtra)(char*, char*, Array_t*);void (*delArray)(Array_t, int);char* (*toUpper)(char*);char* (*toLower)(char*);Bool (*startWith)(char*, char*);Bool (*endWith)(char*, char*);char* (*join)(Array_t, int);char* (*strip)(char*, char*); }STRINGUTIL; extern STRINGUTIL StringUtil;void stringUtilTest(void);#endif

stringUtil.c

#include "stdio.h" #include "stdlib.h" #include "string.h" #include "ctype.h" #include "stdarg.h" #include "stringUtil.h"static char* addExtra(char* p1, char* p2); static char* add(char* p1, char* p2); static char* newString(int num, ...); static void delString(char* p); static int split(char* buff, char* separator, Array_t* result); static int splitExtra(char* buff, char* separator, Array_t* result); static void delArray(Array_t p, int n); static char* toUpper(char* ptr); static char* toLower(char* ptr); static Bool startWith(char* src, char* str); static Bool endWith(char* src, char* str); static char* join(Array_t ptr, int n); static char* strip(char* ptr, char* separator);STRINGUTIL StringUtil = {.add=add,.addExtra=addExtra,.newString=newString,.delString=delString,.split=split,.splitExtra=splitExtra,.delArray=delArray,.toUpper=toUpper,.toLower=toLower,.startWith=startWith,.endWith=endWith,.join=join,.strip=strip};/*** @description: 字符串合并* @param {p1} 字符串1* @param {p2} 字符串2* @return {*} 合并后的字符串指針p1* @attention 會釋放p1，所以調用時等號左邊要有，不能省略，否則用的是已經釋放的舊地址。如：str = stringUtil.add(p1,p2)*/ static char* addExtra(char* p1, char* p2) {char* ptr = NULL;ptr = (char*)realloc(p1, strlen(p1)+strlen(p2)+1);if (ptr != NULL) {strcat(ptr, p2);}return ptr; }/*** @description: 字符串合并* @param {p1} 字符串1* @param {p2} 字符串2* @return {*} 合并后的字符串指針p1* @attention 會創建一個新的字符串返回*/ static char* add(char* p1, char* p2) {char* ptr = NULL;ptr = (char*)calloc(strlen(p1)+strlen(p2)+1, 1);if (ptr != NULL) {strcat(ptr, p1);strcat(ptr, p2);}return ptr; }/*** @description: 創建字符串* @param {num} 字符串數組的個數* @param {...} 多個字符串數組* @return {*} 創建完的字符串指針* @attention 需要調用delString()手動釋放ptr*/ static char* newString(int num, ...) {char *arg = NULL;va_list ap;int length = 0;va_start(ap, num);for (int i = 0; i < num; i++) {arg = va_arg(ap, char*);length += strlen(arg);}// va_end(ap);char* ptr = (char*)calloc(length+1, sizeof(char));if (ptr != NULL) {va_start(ap, num);for (int i = 0; i < num; i++) {arg = va_arg(ap, char*);strcat(ptr, arg);}va_end(ap);}else {printf("malloc failed\r\n");}return ptr; }/*** @description: 釋放一維指針的內存* @param {p} 一維指針* @return {*} 無*/ static void delString(char* p) {free(p);p = NULL; }/*** @description: 釋放二維指針的內存* @param {p} 二維指針* @param {n} 第一維的數量* @return {*} 無* @attention 使用本函數可釋放調用split()函數后的二維指針的內存*/ static void delArray(Array_t p, int n) {for(int i=0; i<n; i++) {free(*(p+i));}free(p);p = NULL; }/*** @description: 分割字符串* @param {buff} 待分割的字符串指針* @param {separator} 分隔符* @param {result} 分割后的字符串數組* @return {*} 分割后的字符串數組的第一維的數量* @attention 會改變原字符串，需要調用delArray()手動釋放result*/ static int split(char* buff, char* separator, Array_t* result) {int max = 4;int index = 0;*result = (Array_t)calloc(max, sizeof(char*));char *token;/* 獲取第一個子字符串 */token = strtok(buff, separator);/* 繼續獲取其他的子字符串 */while( token != NULL ) {// printf( "%s\n", token);if(index == max) {max *= 2;*result = (Array_t)realloc(*result, max*sizeof(char*));if(*result == NULL) {printf("realloc failed\r\n");return 0;}else {// printf("realloc success\r\n");}}*(*result+index) = (char*)calloc(strlen(token)+1, sizeof(char));strcpy(*(*result+index), token);index ++;token = strtok(NULL, separator);}return index; }/*** @description: 分割字符串* @param {buff} 待分割的字符串指針* @param {separator} 分隔符* @param {result} 分割后的字符串數組* @return {*} 分割后的字符串數組的第一維的數量* @attention 不會改變原字符串，需要調用delArray()手動釋放result*/ static int splitExtra(char* buff, char* separator, Array_t* result) {int max = 4;int index = 0;char *prev = buff;char *token;*result = (Array_t)calloc(max, sizeof(char*));/* 獲取第一個子字符串 */token = strstr(buff, separator);/* 繼續獲取其他的子字符串 */while( token != NULL ) {// printf( "%s\n", token);if(index == max) {max *= 2;*result = (Array_t)realloc(*result, max*sizeof(char*));if(*result == NULL) {printf("realloc failed\r\n");return 0;}else {// printf("realloc success\r\n");}}*(*result+index) = (char*)calloc(token-prev+1, sizeof(char));if (*(*result+index) == NULL) {printf("calloc failed\r\n");}memcpy(*(*result+index), prev, token-prev);prev = token+strlen(separator);index ++;token = strstr(prev, separator);}/* 將最后部分加入 */if(index == max) {max += 1;*result = (Array_t)realloc(*result, max*sizeof(char*));if(*result == NULL) {printf("realloc failed\r\n");return 0;}else {// printf("realloc success\r\n");}}int remain = strlen(buff)-(prev-buff);*(*result+index) = (char*)calloc(remain+1, sizeof(char));if (*(*result+index) == NULL) {printf("calloc failed\r\n");}memcpy(*(*result+index), prev, remain);index ++;return index; }/*** @description: 字符串大寫* @param {ptr} 原字符串* @return {*} 大寫后得字符串* @attention 會改變原字符串*/ static char* toUpper(char* ptr) {char *orign = ptr;for (; *ptr != '\0'; ptr++) {*ptr = toupper(*ptr);}return orign; }/*** @description: 字符串小寫* @param {ptr} 原字符串* @return {*} 小寫后得字符串* @attention 會改變原字符串*/ static char* toLower(char* ptr) {char *orign = ptr;for (; *ptr != '\0'; ptr++) {*ptr = tolower(*ptr);}return orign; }/*** @description: 是否以指定子字符串開頭* @param {src} 待比較的字符串* @param {str} 指定的子字符串* @return {*} true/false*/ static Bool startWith(char* src, char* str) {if (strlen(src) < strlen(str)) {return false;}for (int i = 0; i < strlen(str); i++) {if (src[i] != str[i]) {return false;}}return true; }/*** @description: 是否以指定子字符串結尾* @param {src} 待比較的字符串* @param {str} 指定的子字符串* @return {*} true/false*/ static Bool endWith(char* src, char* str) {if (strlen(src) < strlen(str)) {return false;}char* ptr = src+(strlen(src)-strlen(str));for (int i = 0; i < strlen(str); i++) {if (ptr[i] != str[i]) {return false;}}return true; }/*** @description: 將字符串數組合并為一個字符串* @param {ptr} 字符串數組* @param {n} 數組第一維的數量* @return {*} 合并后的字符串* @attention 需要調用delString()手動釋放buff*/ static char* join(Array_t ptr, int n) {int length = 0;for (int i = 0; i < n; i++) {length += strlen(*(ptr+i));}char* buff = NULL;buff = (char*)calloc(length+1, sizeof(char));if (buff){for (int i = 0; i < n; i++) {strcat(buff, *(ptr+i));}}return buff; }/*** @description: 移除字符串中指定的子字符串* @param {ptr} 原字符串指針* @param {ptr} 指定的子字符串指針* @return {*} 移除后的字符串指針，會改變原字符串*/ static char* strip(char* ptr, char* separator) {Array_t res_arr;int cnt = splitExtra(ptr, separator, &res_arr);char* res_str = join(res_arr, cnt);strcpy(ptr, res_str);delArray(res_arr, cnt);delString(res_str);return ptr; }void stringUtilTest() {String str = StringUtil.newString(2, "ab", "cd");printf("1. new String (abc): %s\r\n", str);str = StringUtil.add(str, ",e,f,g,h");printf("2. add String (,e,f,g,h): %s\r\n", str);Array_t res;int cnt = StringUtil.splitExtra(str, ",", &res);printf("3. split String: ");for (int i = 0; i < cnt; i++) {printf("[%d]: %s ", i, res[i]);}printf("\r\n");StringUtil.toUpper(str);printf("4. upper String: %s\r\n", str);StringUtil.toLower(str);printf("5. lower String: %s\r\n", str);Bool check = StringUtil.startWith(str, "abc");printf("6. startWith (abc): %d\r\n", check);check = StringUtil.endWith(str, ",h");printf("7. endWith (,h): %d\r\n", check);String joinstr = StringUtil.join(res, cnt);printf("8. join String: %s\r\n", joinstr);StringUtil.strip(str, ",");printf("9. strip String: %s\r\n", str);StringUtil.delString(joinstr);StringUtil.delArray(res, cnt);StringUtil.delString(str); }

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