62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <sysexits.h>
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#include <string.h>
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#include <errno.h>
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void RunFile(const char*);
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void RunPrompt(void);
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char* GetFileContents(const char*);
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int main(int argc, char** argv) {
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if (argc > 2) {
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printf("Useage: clox [script]\n");
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exit(EX_USAGE);
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} else if (argc == 2) {
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RunFile(argv[1]);
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} else {
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RunPrompt();
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}
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}
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void RunFile(const char* path) {
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printf("Running '%s'\n", path);
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char* contents = GetFileContents(path);
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printf("%s", contents);
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}
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char* GetFileContents(const char* path) {
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FILE *script = fopen(path, "r");
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if (!script) {
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fprintf(stderr, "Failed to open script '%s'. %s.\n", path, strerror(errno));
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return NULL;
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}
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size_t length;
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char* content = NULL;
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size_t bytes_read = getdelim(&content, &length, '\0', script);
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fclose(script);
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if (bytes_read < 0) {
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fprintf(stderr, "Failed to read '%s'. %s.\n", path, strerror(errno));
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return NULL;
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}
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return content;
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}
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void RunPrompt(void) {
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printf("> ");
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char input[256];
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while(fgets(input, sizeof input, stdin) != NULL) {
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if (strcmp(input, "q\n") == 0) break;
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printf("E_NOT_IMPLEMENTED\n");
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printf("> ");
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}
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} |