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/* $Id: sanity.c 15 2024-08-21 15:36:37Z nishi $ */

#include "rv_sanity.h"

#include "rv_version.h"
#include "rv_util.h"
#include "../config.h"

#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>

bool rv_find_executable(const char* name) {
#ifdef USE_PATH
        char* path = rv_strcat(USE_PATH, "");
#else
        char* path = rv_strcat(getenv("PATH"), "");
#endif
        int i;
        int incr = 0;
        for(i = 0;; i++) {
                if(path[i] == 0 || path[i] == PATH_DELIM) {
                        char oldc = path[i];
                        path[i] = 0;
                        char* exec = rv_strcat3(path + incr, "/", name);
#ifdef __MINGW32__
                        char* tmp = exec;
                        exec = rv_strcat(exec, ".exe");
                        free(tmp);
#endif
                        if(access(exec, F_OK) == 0) {
                                free(exec);
                                free(path);
                                return true;
                        }
                        free(exec);
                        incr = i + 1;
                        if(oldc == 0) break;
                }
        }
        free(path);
        return false;
}

void rv_check_sanity(void) {
        bool sane = true;

        bool svnlook = rv_find_executable("svnlook");
        bool svnadmin = rv_find_executable("svnadmin");
        bool htpasswd = rv_find_executable("htpasswd");
#ifdef USE_ENSCRIPT
        bool enscript = rv_find_executable("enscript");
#endif
        bool rm = rv_find_executable("rm");

        if(!svnlook) sane = false;
        if(!svnadmin) sane = false;
        if(!htpasswd) sane = false;
#ifdef USE_ENSCRIPT
        if(!enscript) sane = false;
#endif
        if(!rm) sane = false;

        if(!sane) {
                rv_error_http();
                if(!svnlook) printf("svnlook not found\n");
                if(!svnadmin) printf("svnadmin not found\n");
                if(!htpasswd) printf("htpasswd not found\n");
#ifdef USE_ENSCRIPT
                if(!enscript) printf("enscript not found\n");
#endif
                if(!rm) printf("rm not found\n");
                exit(1);
        }
}