Data commit

Task/File-modification-time/Wren/file-modification-time-1.wren

@@ -0,0 +1,33 @@
+/* file_mod_time_wren */
+
+import "./date" for Date
+
+foreign class Stat {
+    construct new(fileName) {}
+
+    foreign atime
+    foreign mtime
+}
+
+foreign class Utimbuf {
+    construct new(actime, modtime) {}
+
+    foreign utime(fileName)
+}
+
+// gets a Date object from a Unix time in seconds
+var UT2Date = Fn.new { |ut| Date.unixEpoch.addSeconds(ut) }
+
+Date.default = "yyyy|-|mm|-|dd| |hh|:|MM|:|ss" // default format for printing
+
+var fileName = "temp.txt"
+var st = Stat.new(fileName)
+System.print("'%(fileName)' was last modified on %(UT2Date.call(st.mtime)).")
+
+var utb = Utimbuf.new(st.atime, 0) // atime unchanged, mtime = current time
+if (utb.utime(fileName) < 0) {
+    System.print("There was an error changing the file modification time.")
+    return
+}
+st = Stat.new(fileName) // update info
+System.print("File modification time changed to %(UT2Date.call(st.mtime)).")

Task/File-modification-time/Wren/file-modification-time-2.wren

@@ -0,0 +1,155 @@
+/* gcc file_mod_time.c -o file_mod_time -lwren -lm */
+
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <utime.h>
+#include "wren.h"
+
+/* Stat functions */
+
+void Stat_allocate(WrenVM* vm) {
+    struct stat *pStat = (struct stat*)wrenSetSlotNewForeign(vm, 0, 0, sizeof(struct stat));
+    const char *filename = wrenGetSlotString(vm, 1);
+    if (stat(filename, pStat) < 0) {
+        perror(filename);
+        exit(1);
+    }
+}
+
+void Stat_atime(WrenVM* vm) {
+    struct stat *pStat = (struct stat*)wrenGetSlotForeign(vm, 0);
+    wrenSetSlotDouble(vm, 0, (double)pStat->st_atime);
+}
+
+void Stat_mtime(WrenVM* vm) {
+    struct stat *pStat = (struct stat*)wrenGetSlotForeign(vm, 0);
+    wrenSetSlotDouble(vm, 0, (double)pStat->st_mtime);
+}
+
+/* Utimbuf functions */
+
+void Utimbuf_allocate(WrenVM* vm) {
+    struct utimbuf *pUtimbuf = (struct utimbuf*)wrenSetSlotNewForeign(vm, 0, 0, sizeof(struct utimbuf));
+    time_t actime = (time_t)wrenGetSlotDouble(vm, 1);
+    if (!actime) actime = time(NULL);
+    pUtimbuf->actime = actime;
+    time_t modtime = (time_t)wrenGetSlotDouble(vm, 2);
+    if (!modtime) modtime = time(NULL);
+    pUtimbuf->modtime = modtime;
+}
+
+void Utimbuf_utime(WrenVM* vm) {
+    const struct utimbuf *pUtimbuf = (const struct utimbuf*)wrenGetSlotForeign(vm, 0);
+    const char *filename = wrenGetSlotString(vm, 1);
+    int res = utime(filename, pUtimbuf);
+    wrenSetSlotDouble(vm, 0, (double)res);
+}
+
+WrenForeignClassMethods bindForeignClass(WrenVM* vm, const char* module, const char* className) {
+    WrenForeignClassMethods methods;
+    methods.allocate = NULL;
+    methods.finalize = NULL;
+    if (strcmp(module, "main") == 0) {
+        if (strcmp(className, "Stat") == 0) {
+            methods.allocate = Stat_allocate;
+        } else if (strcmp(className, "Utimbuf") == 0) {
+            methods.allocate = Utimbuf_allocate;
+        }
+    }
+    return methods;
+}
+
+WrenForeignMethodFn bindForeignMethod(
+    WrenVM* vm,
+    const char* module,
+    const char* className,
+    bool isStatic,
+    const char* signature) {
+    if (strcmp(module, "main") == 0) {
+        if (strcmp(className, "Stat") == 0) {
+            if(!isStatic && strcmp(signature, "atime") == 0) return Stat_atime;
+            if(!isStatic && strcmp(signature, "mtime") == 0) return Stat_mtime;
+        } else if (strcmp(className, "Utimbuf") == 0) {
+            if(!isStatic && strcmp(signature, "utime(_)") == 0) return Utimbuf_utime;
+        }
+    }
+    return NULL;
+}
+
+static void writeFn(WrenVM* vm, const char* text) {
+    printf("%s", text);
+}
+
+void errorFn(WrenVM* vm, WrenErrorType errorType, const char* module, const int line, const char* msg) {
+    switch (errorType) {
+        case WREN_ERROR_COMPILE:
+            printf("[%s line %d] [Error] %s\n", module, line, msg);
+            break;
+        case WREN_ERROR_STACK_TRACE:
+            printf("[%s line %d] in %s\n", module, line, msg);
+            break;
+        case WREN_ERROR_RUNTIME:
+            printf("[Runtime Error] %s\n", msg);
+            break;
+    }
+}
+
+char *readFile(const char *fileName) {
+    FILE *f = fopen(fileName, "r");
+    fseek(f, 0, SEEK_END);
+    long fsize = ftell(f);
+    rewind(f);
+    char *script = malloc(fsize + 1);
+    size_t ret = fread(script, 1, fsize, f);
+    if (ret != fsize) printf("Error reading %s\n", fileName);
+    fclose(f);
+    script[fsize] = 0;
+    return script;
+}
+
+static void loadModuleComplete(WrenVM* vm, const char* module, WrenLoadModuleResult result) {
+    if( result.source) free((void*)result.source);
+}
+
+WrenLoadModuleResult loadModule(WrenVM* vm, const char* name) {
+    WrenLoadModuleResult result = {0};
+    if (strcmp(name, "random") != 0 && strcmp(name, "meta") != 0) {
+        result.onComplete = loadModuleComplete;
+        char fullName[strlen(name) + 6];
+        strcpy(fullName, name);
+        strcat(fullName, ".wren");
+        result.source = readFile(fullName);
+    }
+    return result;
+}
+
+int main(int argc, char **argv) {
+    WrenConfiguration config;
+    wrenInitConfiguration(&config);
+    config.writeFn = &writeFn;
+    config.errorFn = &errorFn;
+    config.bindForeignClassFn = &bindForeignClass;
+    config.bindForeignMethodFn = &bindForeignMethod;
+    config.loadModuleFn = &loadModule;
+    WrenVM* vm = wrenNewVM(&config);
+    const char* module = "main";
+    const char* fileName = "file_mod_time.wren";
+    char *script = readFile(fileName);
+    WrenInterpretResult result = wrenInterpret(vm, module, script);
+    switch (result) {
+        case WREN_RESULT_COMPILE_ERROR:
+            printf("Compile Error!\n");
+            break;
+        case WREN_RESULT_RUNTIME_ERROR:
+            printf("Runtime Error!\n");
+            break;
+        case WREN_RESULT_SUCCESS:
+            break;
+    }
+    wrenFreeVM(vm);
+    free(script);
+    return 0;
+}