在C中匹配字符串模式平面文件

#include <stdio.h>
#include <pcre.h>

int main() {
    pcre *regex;
    const char *pattern = "pattern"; // 替换为你的字符串模式
    const char *subject = "file.txt"; // 替换为你的文件名

    const char *error;
    int erroffset;
    int rc;
    int ovector[30];

    regex = pcre_compile(pattern, 0, &error, &erroffset, NULL);
    if (regex == NULL) {
        printf("PCRE compilation failed at offset %d: %s\n", erroffset, error);
        return 1;
    }

    rc = pcre_exec(regex, NULL, subject, strlen(subject), 0, 0, ovector, 30);
    if (rc < 0) {
        if (rc == PCRE_ERROR_NOMATCH) {
            printf("No match\n");
        } else {
            printf("Matching error %d\n", rc);
        }
        pcre_free(regex);
        return 1;
    }

    printf("Matched!\n");

    pcre_free(regex);
    return 0;
}