C语言实现手写字符串处理工具的示例代码
目录
- 头文件
- 实现文件
头文件
#ifndef STUDY_STR_UTIL_H #define STUDY_STR_UTIL_H #include "../structure/charhashmap.h" #include "../structure/charlist.h" #include "../structure/json.h" #include <malloc.h> #include <stdio.h> #include <math.h> #include <stdlib.h> #include <stdarg.h> typedef int BOOL;//定义一个布尔类型 #define TRUE 1 #define FALSE 0 int str_to_int(char *str); char *int_to_str(int num); long str_to_long(char *str); long long str_to_long_long(char *str); char *long_to_str(long num); char *float_to_str(float num); double str_to_double(char *str); char *double_to_str(double num); char *str_trim(char *str); char *str_ltrim(char *str); char *str_rtrim(char *str); char *str_to_upper(char *str); char *str_to_lower(char *str); BOOL str_compare(char *str1, char *str2); BOOL str_equals(char *str1, char *str2); BOOL str_compare_ignore_case(char *str1, char *str2); char *str_copy(char *str); char *str_copy_n(char *str, int n); char *str_concat(int count, ...); char *str_concat_n(char *str1, char *str2, int n); int str_find(char *str, char *search); int str_find_n(char *str, char *search, int start, int end); int str_find_n_times(char *str, char *search, int n); int str_find_n_times_reverse(char *str, char *search, int n); int str_find_ignore_case(char *str1, char *str2); int str_find_n_ignore_case(char *str1, char *str2, int n); int str_find_reverse(char *str1, char *str2); int str_find_reverse_n(const char *str1, char *str2, int start, int end); char *str_replace(char *str1, char *str2, char *str3); char *str_replace_all(char *str1, char *str2, char *str3); CharList *str_split(char *str1, char *str2); int str_array_length(char **str); int str_length(const char *str); char *str_substring(char *str, int start, int end); void str_array_print(char **str); void str_print(char *str); char *str_reverse(char *str); int str_is_empty(const char *str); int str_start_with(char *str1, char *str2); int str_end_with(char *str1, char *str2); unsigned int hashCode(char *str); int str_contains(char *str1, char *str2); int str_is_number(char *str); int str_char_code(const char *str); char str_char_at(char *str, int index); int str_is_char(char *str); int str_is_double(char *str); int str_is_special_char(char *str); int str_is_char_number(char *str); int str_is_palindrome(char *str); int str_is_what(char *str); int str_similarity(char *str1, char *str2); int str_is_boolean(char *str); int str_is_numeric(char *str); char *str_calculate_one(char *a, char *symbol); char *str_calculate_two(char *a, char *b, char *symbol); char *str_template(char *str, char *template); CharList *get_range(char *start, char *end); char *str_create(char *str); char *str_append(char *str1, char *str2); char *str_template(char *str, char *template); char *str_template_map(char *str, CharHashMap *pMap); char *formatStr(char *format, ...); int str_contain_count(char *str1, char *str2); #endif //STUDY_STR_UTIL_H
实现文件
#include "str_util.h" //字符串转换为整数 int str_to_int(char *str) { return atoi(str); } //整数转换为字符串 char *int_to_str(int num) { char *str = (char *) malloc(sizeof(char) * 10); sprintf(str, "%d", num); return str; } //字符串转换为长整数 long str_to_long(char *str) { return atol(str); } //字符串转换为长整数的长整数 long long str_to_long_long(char *str) { return atoll(str); } //长整数转换为字符串 char *long_to_str(long num) { char *str = (char *) malloc(sizeof(char) * 20); sprintf(str, "%ld", num); return str; } //浮点数转换为字符串 char *float_to_str(float num) { char *str = (char *) malloc(sizeof(char) * 20); // 把双精度浮点数dd转换为字符串,存放在strdd中。 sprintf(str, "%.2f", num); return str; } //字符串转换为浮点数 double str_to_double(char *str) { return atof(str); } //双精度浮点数转换为字符串 char *double_to_str(double num) { char *str = (char *) malloc(sizeof(char) * 20); // 把双精度浮点数dd转换为字符串,存放在strdd中。 sprintf(str, "%.2lf", num); return str; } //获取字符串的长度 从1开始的 int str_length(const char *str) { int i = 0; while (str[i] != '\0') { i++; } return i; } //获取字符串数组的长度 注意从1开始的 数组结尾必须加一个NULL才能获取数组的长度 str[i+1]=NULL int str_array_length(char **str_array) { int i = 0; while (str_array[i] != NULL) { i++; } return i; } //字符串去空格 (彻底去掉所有的空格) char *str_trim(char *str) { int i = 0; int j = 0; int len = str_length(str); char *result = (char *) malloc(sizeof(char) * len); while (str[i] != '\0') { if (str[i] != ' ') { result[j] = str[i]; j++; } i++; } result[j] = '\0'; return result; } //字符串去除左边空格 char *str_ltrim(char *str) { int i = 0; int j = 0; int len = str_length(str); char *result = (char *) malloc(sizeof(char) * len); while (str[i] != '\0') { if (str[i] != ' ') { break; } i++; } while (str[i] != '\0') { result[j] = str[i]; i++; j++; } result[j] = '\0'; return result; } //字符串去除右边空格 char *str_rtrim(char *str) { int i = 0; int j = 0; int len = str_length(str); char *result = (char *) malloc(sizeof(char) * len); while (str[i] != '\0') { if (str[i] != ' ') { result[j] = str[i]; j++; } i++; } result[j] = '\0'; return result; } //字符串转换为大写 char *str_to_upper(char *str) { int i = 0; int len = str_length(str); char *result = (char *) malloc(sizeof(char) * len); while (str[i] != '\0') { if (str[i] >= 'a' && str[i] <= 'z') { result[i] = str[i] - 32; } else { result[i] = str[i]; } i++; } result[i] = '\0'; return result; } //字符串转换为小写 char *str_to_lower(char *str) { int i = 0; int len = str_length(str); char *result = (char *) malloc(sizeof(char) * len); while (str[i] != '\0') { if (str[i] >= 'A' && str[i] <= 'Z') { result[i] = str[i] + 32; } else { result[i] = str[i]; } i++; } result[i] = '\0'; return result; } //字符串比较 1相等 0不相等 BOOL str_compare(char *str1, char *str2) { int i = 0; while (str1[i] != '\0' && str2[i] != '\0') { if (str1[i] != str2[i]) { return FALSE; } i++; } if (str1[i] != str2[i]) { return FALSE; } return TRUE; } BOOL str_equals(char *str1, char *str2) { return str_compare(str1, str2); } //字符串比较忽略大小写 1相等 0不相等 BOOL str_compare_ignore_case(char *str1, char *str2) { int i = 0; while (str1[i] != '\0' && str2[i] != '\0') { if (str1[i] != str2[i]) { if (str1[i] >= 'A' && str1[i] <= 'Z') { if (str1[i] + 32 != str2[i]) { return FALSE; } } else if (str1[i] >= 'a' && str1[i] <= 'z') { if (str1[i] - 32 != str2[i]) { return FALSE; } } else { return FALSE; } } i++; } if (str1[i] != str2[i]) { return FALSE; } return TRUE; } //字符串拷贝 char *str_copy(char *str) { int i = 0; int len = str_length(str); char *result = (char *) malloc(sizeof(char) * len); while (str[i] != '\0') { result[i] = str[i]; i++; } result[i] = '\0'; return result; } //字符串拷贝指定长度 char *str_copy_n(char *str, int n) { int i = 0; char *result = (char *) malloc(sizeof(char) * n); while (str[i] != '\0' && i < n) { result[i] = str[i]; i++; } result[i] = '\0'; return result; } //字符串拼接可变参数 参数1为拼接的字符串个数 ,参数2开始为字符串..... char *str_concat(int count, ...) { va_list args; va_start(args, count); int i = 0; //保留参数 char **str = (char **) malloc(sizeof(char *) * count); int len = 0; //总长度(字节) for (i = 0; i < count; i++) { str[i] = va_arg(args, char *); len += str_length(str[i]); } char *result = (char *) malloc(sizeof(char) * len); int j = 0; for (i = 0; i < count; i++) { char *str1 = str[i]; int k = 0; while (str1[k] != '\0') { result[j] = str1[k]; j++; k++; } } result[j] = '\0'; va_end(args); free(str); return result; } //字符串拼接指定长度 从str2的第n个字符开始拼接 char *str_concat_n(char *str1, char *str2, int n) { int i = 0; int j = 0; int len1 = str_length(str1); int len2 = str_length(str2); char *result = (char *) malloc(sizeof(char) * (len1 + len2)); while (str1[i] != '\0') { result[i] = str1[i]; i++; } while (str2[j] != '\0' && j < n) { result[i] = str2[j]; i++; j++; } result[i] = '\0'; return result; } //字符串查找 从左到右查找 返回第一次出现的位置 不存在返回-1 从0开始 int str_find(char *str, char *search) { int i = 0; int j = 0; int k = 0; int len = str_length(str); int search_len = str_length(search); while (i < len) { if (str[i] == search[j]) { k = i; while (str[k] == search[j] && j < search_len) { k++; j++; } if (j == search_len) { return i; } j = 0; } i++; } return -1; } //字符串查找指定长度 从指定位置开始到什么位置结束 ,start从0开始 ,end从1开始 int str_find_n(char *str, char *search, int start, int end) { int i = start; int j = 0; int k = 0; int len = str_length(str); int search_len = str_length(search); while (i < len && i < end) { if (str[i] == search[j]) { k = i; while (str[k] == search[j] && j < search_len) { k++; j++; } if (j == search_len) { return i; } j = 0; } i++; } return -1; } //字符串查找 从左到右查找 返回第n次出现的位置 int str_find_n_times(char *str, char *search, int n) { int i = 0; int j = 0; int k = 0; int len = str_length(str); int search_len = str_length(search); while (i < len) { if (str[i] == search[j]) { k = i; while (str[k] == search[j] && j < search_len) { k++; j++; } if (j == search_len) { n--; if (n == 0) { return i; } } j = 0; } i++; } return -1; } //字符串查找,从右到左查找,返回第n次出现的位置 int str_find_n_times_reverse(char *str, char *search, int n) { int i = str_length(str) - 1; int j = str_length(search) - 1; int k = 0; int len = str_length(str); int search_len = str_length(search); while (i >= 0) { if (str[i] == search[j]) { k = i; while (str[k] == search[j] && j >= 0) { k--; j--; } if (j == -1) { n--; if (n == 0) { return i - search_len + 1; } } j = search_len - 1; } i--; } return -1; } //字符串查找忽略大小写 返回位置 int str_find_ignore_case(char *str1, char *str2) { char *p = str1; char *q = str2; int i = 0; while (*p != '\0') { if (*p == *q || *p == *q + 32 || *p == *q - 32) { char *p1 = p; char *q1 = q; while (*p1 != '\0' && *q1 != '\0') { if (*p1 != *q1 && *p1 != *q1 + 32 && *p1 != *q1 - 32) { break; } p1++; q1++; } if (*q1 == '\0') { return i; } } p++; i++; } return -1; } //字符串查找指定长度忽略大小写 从指定位置开始到什么位置结束,start从0开始 ,end从1开始 int str_find_ignore_case_n(char *str1, char *str2, int start, int end) { char *p = str1 + start; char *q = str2; int i = start; while (*p != '\0' && i < end) { if (*p == *q || *p == *q + 32 || *p == *q - 32) { char *p1 = p; char *q1 = q; while (*p1 != '\0' && *q1 != '\0') { if (*p1 != *q1 && *p1 != *q1 + 32 && *p1 != *q1 - 32) { break; } p1++; q1++; } if (*q1 == '\0') { return i; } } p++; i++; } return -1; } //从结尾开始查找 str1字符串 str2子串 int str_find_reverse(char *str1, char *str2) { int i = str_length(str1) - 1; int j = str_length(str2) - 1; while (i >= 0) { if (str1[i] == str2[j]) { int k = i; int l = j; while (str1[k] == str2[l] && l >= 0) { k--; l--; } if (l == -1) { return k + 1; } } i--; } return -1; } //从结尾开始查找到什么位置结束,start从0开始 ,end从1开始 int str_find_reverse_n(const char *str1, char *str2, int start, int end) { int i = start; int j = str_length(str2) - 1; while (i >= end) { if (str1[i] == str2[j]) { int k = i; int l = j; while (str1[k] == str2[l] && l >= 0) { k--; l--; } if (l == -1) { return k + 1; } } i--; } return -1; } //字符串替换(只替换第一个) str1:源字符串 str2:要替换的字符串 str3:替换成的字符串 char *str_replace(char *str1, char *str2, char *str3) { int i = str_find(str1, str2); if (i == -1) { return str1; } int len1 = str_length(str1); int len2 = str_length(str2); int len3 = str_length(str3); char *str = (char *) malloc(sizeof(char) * (len1 - len2 + len3 + 1)); int j = 0; int k = 0; while (j < i) { str[j] = str1[j]; j++; } while (k < len3) { str[j] = str3[k]; j++; k++; } k = i + len2; while (k < len1) { str[j] = str1[k]; j++; k++; } str[j] = '\0'; return str; } //字符串替换(全部替换) str1:源字符串 str2:要替换的字符串 str3:替换成的字符串 char *str_replace_all(char *str1, char *str2, char *str3) { int i = str_find(str1, str2); if (i == -1) { return str1; } int len1 = str_length(str1); int len2 = str_length(str2); int len3 = str_length(str3); char *str = (char *) malloc(sizeof(char) * (len1 - len2 + len3 + 1)); int j = 0; int k = 0; while (j < i) { str[j] = str1[j]; j++; } while (k < len3) { str[j] = str3[k]; j++; k++; } k = i + len2; while (k < len1) { str[j] = str1[k]; j++; k++; } str[j] = '\0'; return str_replace_all(str, str2, str3); } //字符串分割 str1:源字符串 str2:分割符 返回值:分割后的字符串数组 CharList *str_split(char *str1, char *str2) { char *p = str1; char *q = str2; int i = 0; int j = 0; int k = 0; int m = 0; int n = 0; while (*p != '\0') { if (*p == *q) { char *p1 = p; char *q1 = q; while (*p1 != '\0' && *q1 != '\0') { if (*p1 != *q1) { break; } p1++; q1++; } if (*q1 == '\0') { i++; } } p++; } char **str = (char **) malloc(sizeof(char *) * (i + 1)); p = str1; while (*p != '\0') { if (*p == *q) { char *p1 = p; char *q1 = q; while (*p1 != '\0' && *q1 != '\0') { if (*p1 != *q1) { break; } p1++; q1++; } if (*q1 == '\0') { str[j] = (char *) malloc(sizeof(char) * (p - str1 - m + 1)); for (k = 0; k < p - str1 - m; k++) { str[j][k] = str1[m + k]; } str[j][k] = '\0'; j++; m = p - str1 + 1; } } p++; } str[j] = (char *) malloc(sizeof(char) * (p - str1 - m + 1)); for (k = 0; k < p - str1 - m; k++) { str[j][k] = str1[m + k]; } str[j][k] = '\0'; str[j + 1] = NULL; //数组最后一个元素为NULL 用于判断是否到达数组末尾 //转换为charlist集合 CharList *pCharlist = createCharList(str_array_length(str)); int length = str_array_length(str); for (i = 0; i < length; ++i) { addCharList(pCharlist, str[i]); } return pCharlist; } //获取字符串包含指定字符的个数 str1是字符串 str2是指定字符 int str_contain_count(char *str1, char *str2) { int i = 0; int j = 0; while (str1[i] != '\0') { if (str1[i] == str2[j]) { j++; } else { j = 0; } if (str2[j] == '\0') { j = 0; i++; } i++; } return i; } //截取字符串 str:源字符串 start:开始位置 end:结束位置 start和end都是从0开始的 char *str_substring(char *str, int start, int end) { char *p = str; int i = 0; int j = 0; while (*p != '\0') { p++; i++; } if (start < 0 || start > i) { return NULL; } if (end < 0 || end > i) { return NULL; } if (start > end) { return NULL; } char *str1 = (char *) malloc(sizeof(char) * (end - start + 1)); p = str; while (j < start) { p++; j++; } int k = 0; while (j <= end) { str1[k] = *p; p++; j++; k++; } str1[k] = '\0'; return str1; } //打印字符串数组 void str_array_print(char **str) { int i = str_array_length(str); //打印字符串数组 for (int j = 0; j < i; j++) { printf("%s", str[j]); //如果不是最后一个元素,打印逗号 if (j != i - 1) { printf(","); } } } //打印字符串 void str_print(char *str) { printf("%s\n", str); } //字符串反转 char *str_reverse(char *str) { char *p = str; int i = 0; int j = 0; while (*p != '\0') { p++; i++; } char *str1 = (char *) malloc(sizeof(char) * (i + 1)); p = str; while (*p != '\0') { str1[i - j - 1] = *p; p++; j++; } str1[i] = '\0'; return str1; } //判断字符串是否为空 int str_is_empty(const char *str) { if (str == NULL || str[0] == '\0') { return 1; } return 0; } //判断开头是否包含指定字符串 str1:源字符串 str2:指定字符串 返回值:1包含 0不包含 BOOL str_start_with(char *str1, char *str2) { char *p = str1; char *q = str2; while (*p != '\0' && *q != '\0') { if (*p != *q) { return 0; } p++; q++; } if (*q == '\0') { return TRUE; } return FALSE; } //判断结尾是否包含指定字符串 str1:源字符串 str2:指定字符串 返回值:1包含 0不包含 BOOL str_end_with(char *str1, char *str2) { char *p = str1; char *q = str2; int i = 0; int j = 0; while (*p != '\0') { p++; i++; } while (*q != '\0') { q++; j++; } if (i < j) { return FALSE; } p = str1; q = str2; while (*p != '\0') { p++; } while (*q != '\0') { q++; } while (j > 0) { if (*p != *q) { return FALSE; } p--; q--; j--; } return TRUE; } //最好的char类型的hash算法,冲突较少,效率较高 unsigned int hashCode(char *str) { unsigned int seed = 131; unsigned int hash = 0; while (*str) { hash = hash * seed + (*str++); } return (hash & 0x7FFFFFFF); } //字符串包含 str1:源字符串是否包含str2 包含返回1 不包含返回0 int str_contains(char *str1, char *str2) { char *p = str1; char *q = str2; while (*p != '\0') { if (*p == *q) { char *p1 = p; char *q1 = q; while (*p1 != '\0' && *q1 != '\0') { if (*p1 != *q1) { break; } p1++; q1++; } if (*q1 == '\0') { return 1; } } p++; } return 0; } //获取单个字符的ascii码 int str_char_code(const char *str) { return (int) *str; } //获取字符串的的单个字符 如果没有找到那么返回0,找到返回对应的字符 char str_char_at(char *str, int index) { char *p = str; int i = 0; while (*p != '\0') { if (i == index) { char str1 = *p; return str1; } p++; i++; } return 0; } //判断是否是数字包括负数 是返回1 不是返回0 int str_is_number(char *str) { char *p = str; int i = 0; while (*p != '\0') { if (*p == '-') { if (i != 0) { return 0; } } else if (*p < '0' || *p > '9') { return 0; } p++; i++; } return 1; } //判断是否都是字符 是返回1 不是返回0 int str_is_char(char *str) { char *p = str; while (*p != '\0') { if (*p < 'a' || *p > 'z') { if (*p < 'A' || *p > 'Z') { return 0; } } p++; } return 1; } //判断是否是小数包括负数 是返回1 不是返回0 int str_is_double(char *str) { char *p = str; int i = 0; int j = 0; while (*p != '\0') { if (*p == '-') { if (i != 0) { return 0; } } else if (*p == '.') { j++; if (j > 1) { return 0; } } else if (*p < '0' || *p > '9') { return 0; } p++; i++; } return 1; } //判断是否是特殊字符(除了字母和数字之外的符号都是特殊字符) 是返回1 不是返回0 int str_is_special_char(char *str) { char *p = str; while (*p != '\0') { if (*p >= 'a' && *p <= 'z') { p++; continue; } if (*p >= 'A' && *p <= 'Z') { p++; continue; } if (*p >= '0' && *p <= '9') { p++; continue; } return 1; } return 0; } //判断是否是字母和数字组成的字符串 是返回1 不是返回0 int str_is_char_number(char *str) { char *p = str; while (*p != '\0') { if (*p >= 'a' && *p <= 'z') { p++; continue; } if (*p >= 'A' && *p <= 'Z') { p++; continue; } if (*p >= '0' && *p <= '9') { p++; continue; } return 0; } return 1; } //判断字符串是否是布尔值 是返回1 不是返回0 int str_is_boolean(char *str) { if (str_compare(str, "true") || str_compare(str, "false")) { return 1; } return 0; } //判断字符串是否是回文字符串 是返回1 不是返回0 (回文字符串:正读和反读都一样的字符串) int str_is_palindrome(char *str) { char *p = str; char *q = str; int i = 0; int j = 0; while (*p != '\0') { p++; i++; } while (*q != '\0') { q++; j++; } if (i < j) { return 0; } p = str; q = str; while (*p != '\0') { p++; } while (*q != '\0') { q++; } while (i > 0 && j > 0) { if (*p != *q) { return 0; } p--; q--; i--; j--; } if (j == 0) { return 1; } return 0; } // 判断字符串是,数字,字母,小数,数字返回1,字母返回2,小数返回3,其他返回0 int str_is_what(char *str) { if (str_is_number(str)) { return 1; } if (str_is_char(str)) { return 2; } if (str_is_double(str)) { return 3; } return 0; } //判断是否是数值 是返回1 不是返回0 int str_is_numeric(char *str) { if (str_is_number(str)) { return 1; } if (str_is_double(str)) { return 1; } return 0; } //计算两个字符串的相似度,返回百分比 0-100 int str_similarity(char *str1, char *str2) { char *p = str1; char *q = str2; int i = 0; int j = 0; int k = 0; while (*p != '\0') { p++; i++; } while (*q != '\0') { q++; j++; } p = str1; q = str2; while (*p != '\0') { while (*q != '\0') { if (*p == *q) { k++; } q++; } p++; q = str2; } if (i > j) { return (int) (k * 100 / i); } return (int) (k * 100 / j); } //字符串转布尔值 BOOL str_to_bool(char *str) { if (str_compare(str, "true")) { return TRUE; } else { return FALSE; } } //布尔值转字符串 char *bool_to_str(BOOL bool) { if (bool) { return "true"; } else { return "false"; } } //单个字符串的操作(自增(++),自减(--),取反(~),布尔取反(!),取绝对值(+),取负(-),向上取整(ceil),向下取整(floor),四舍五入(round) char *str_calculate_one(char *a, char *symbol) { //判断是否是数值 if (str_is_numeric(a)) { if (str_compare(symbol, "++")) { //自增 return int_to_str(str_to_int(a) + 1); } if (str_compare(symbol, "--")) { //自减 return int_to_str(str_to_int(a) - 1); } if (str_compare(symbol, "~")) { //按位取反 return int_to_str(~str_to_int(a)); } if (str_compare(symbol, "-")) { //取负 if (*a != '-') { //如果不是负数 return int_to_str(-str_to_int(a)); } else { return a; } } if (str_compare(symbol, "+")) { //取绝对值 return int_to_str(abs(str_to_int(a))); } if (str_is_double(a)) { //如果是小数 if (str_compare(symbol, "ceil")) { //向上取整 return double_to_str(ceil(str_to_double(a))); } if (str_compare(symbol, "floor")) { //向下取整 return double_to_str(floor(str_to_double(a))); } if (str_compare(symbol, "round")) { //四舍五入 return double_to_str(round(str_to_double(a))); } } else {//如果是整数 return a; } } //判断是否是布尔值 if (str_is_boolean(a)) { if (str_compare(symbol, "!")) { //取反 if (str_compare(a, "true")) { return bool_to_str(0); } return bool_to_str(1); } } return NULL; } //计算两个字符串的各种操作 // 数值运算: 加(+) 减(-) 乘(*) 除(/) 取余(%) 自增(++) 自减(--) // 比较运算: 大于(>)、小于(<)、等于(==)、 大于等于(>=)、小于等于(<=)和不等于(!=) // 逻辑运算: 包括与(&&)、或(||)、非(!) // 位操作: 按位与(&)、按位或(|)、按位异或(^)、按位取反(~) char *str_calculate_two(char *a, char *b, char *symbol) { //判断是否是整数 if (str_is_numeric(a) && str_is_numeric(b)) { if (str_compare(symbol, "+")) { //加 if (str_is_number(a) && str_is_number(b)) { return int_to_str(str_to_int(a) + str_to_int(b)); } return double_to_str(str_to_double(a) + str_to_double(b)); } if (str_compare(symbol, "-")) { //减 if (str_is_number(a) && str_is_number(b)) { return int_to_str(str_to_int(a) - str_to_int(b)); } return double_to_str(str_to_double(a) - str_to_double(b)); } if (str_compare(symbol, "*")) { //乘 if (str_is_number(a) && str_is_number(b)) { return int_to_str(str_to_int(a) * str_to_int(b)); } return double_to_str(str_to_double(a) * str_to_double(b)); } if (str_compare(symbol, "/")) { //除 if (str_is_number(a) && str_is_number(b)) { return int_to_str(str_to_int(a) / str_to_int(b)); } return double_to_str(str_to_double(a) / str_to_double(b)); } if (str_compare(symbol, "%")) { //取余 return int_to_str(str_to_int(a) % str_to_int(b)); } if (str_compare(symbol, ">")) { //大于 if (str_is_number(a) && str_is_number(b)) { return bool_to_str(str_to_int(a) > str_to_int(b)); } return bool_to_str(str_to_double(a) > str_to_double(b)); } if (str_compare(symbol, "<")) { //小于 if (str_is_number(a) && str_is_number(b)) { return bool_to_str(str_to_int(a) < str_to_int(b)); } return bool_to_str(str_to_double(a) < str_to_double(b)); } if (str_compare(symbol, "==")) { //等于 if (str_is_number(a) && str_is_number(b)) { return bool_to_str(str_to_int(a) == str_to_int(b)); } return bool_to_str(str_to_double(a) == str_to_double(b)); } if (str_compare(symbol, ">=")) { //大于等于 if (str_is_number(a) && str_is_number(b)) { return bool_to_str(str_to_int(a) >= str_to_int(b)); } return bool_to_str(str_to_double(a) >= str_to_double(b)); } if (str_compare(symbol, "<=")) { //小于等于 if (str_is_number(a) && str_is_number(b)) { return bool_to_str(str_to_int(a) <= str_to_int(b)); } return bool_to_str(str_to_double(a) <= str_to_double(b)); } if (str_compare(symbol, "!=")) { //不等于 if (str_is_number(a) && str_is_number(b)) { return bool_to_str(str_to_int(a) != str_to_int(b)); } return bool_to_str(str_to_double(a) != str_to_double(b)); } if (str_is_number(a) && str_is_number(b)) { if (str_compare(symbol, "&")) { //按位与 return int_to_str(str_to_int(a) & str_to_int(b)); } if (str_compare(symbol, "|")) { //按位或 return int_to_str(str_to_int(a) | str_to_int(b)); } if (str_compare(symbol, "^")) { //按位异或 return int_to_str(str_to_int(a) ^ str_to_int(b)); } if (str_compare(symbol, "<<")) { //左移 return int_to_str(str_to_int(a) << str_to_int(b)); } if (str_compare(symbol, ">>")) { //右移 return int_to_str(str_to_int(a) >> str_to_int(b)); } } } if (str_is_boolean(a) && str_is_boolean(b)) { if (str_compare(symbol, "&&")) { //与 return bool_to_str(str_to_bool(a) && str_to_bool(b)); } if (str_compare(symbol, "||")) { //或 return bool_to_str(str_to_bool(a) || str_to_bool(b)); } } return NULL; } //创建一个字符串 char *str_create(char *str) { return str_copy(str); } //追加字符串 char *str_append(char *str1, char *str2) { return str_concat(2, str1, str2); } //模板字符串(字符串中可以包含变量) 例如: "hello${name},age${age}" 传输: {name:world,age=123} 返回: hello world,age 123 char *str_template(char *str, char *template) { if (str == NULL || str_length(str) == 0) { return NULL; } CharHashMap *pMap = str_to_json_map(template); if (pMap == NULL || pMap->size == 0) { return str; } char *result = str; CharHashMapIterator *pIterator = createCharHashMapIterator(pMap); while (hasNextCharHashMapIterator(pIterator)) { CharKvLinkedNode *pNode = nextCharHashMapIterator(pIterator); char *key = pNode->key; //拼接key,例如: ${name} char *key_str = str_concat(3, "${", key, "}"); //替换 ${name} 为 value result = str_replace(result, key_str, pNode->value); } charHashMapClear(pMap);//清空map,防止内存泄漏 return result; } //模板字符串,map版本 char *str_template_map(char *str, CharHashMap *pMap) { if (str == NULL || str_length(str) == 0) { return NULL; } if (pMap == NULL || pMap->size == 0) { return str; } char *result = str; CharHashMapIterator *pIterator = createCharHashMapIterator(pMap); while (hasNextCharHashMapIterator(pIterator)) { CharKvLinkedNode *pNode = nextCharHashMapIterator(pIterator); char *key = pNode->key; //拼接key,例如: ${name} char *key_str = str_concat(3, "${", key, "}"); //替换 ${name} 为 value result = str_replace(result, key_str, pNode->value); } return result; } // 字符串模板 formatStr("%s is %d year old.", "frank", 25); //frank is 25 year old. char *formatStr(char *format, ...) { char *pszBuff = malloc(1024); va_list vl; va_start(vl, format); vsprintf(pszBuff, format, vl); return pszBuff; } //获取n~n之间的所有数值 CharList *get_range(char *start, char *end) { if (start == NULL || end == NULL) { return NULL; } if (!str_is_number(start) || !str_is_number(end)) { return NULL; } int start_int = str_to_int(start); int end_int = str_to_int(end); CharList *pList = createCharList(end_int - start_int + 1); for (int i = start_int; i <= end_int; i++) { char *str = int_to_str(i); addCharList(pList, str); } return pList; }
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