diff options
Diffstat (limited to 'src/main.c')
| -rw-r--r-- | src/main.c | 48 |
1 files changed, 43 insertions, 5 deletions
@@ -2,11 +2,13 @@ #include <err.h> #include <langinfo.h> #include <locale.h> +#include <stdarg.h> #include <stdbool.h> #include <stdint.h> #include <stdio.h> #include <stdlib.h> #include <string.h> +#include <unistd.h> #include "lexer.h" #include "parser.h" @@ -17,7 +19,10 @@ # define __has_builtin(x) (0) #endif -static bool utf8; +static int rv; +static bool interactive, utf8; + +const char *current_file; static bool eqnsolve(eqn_t *, uint64_t, uint64_t); static int eqnprint(eqn_t *); @@ -41,11 +46,31 @@ main(int argc, char **argv) { setlocale(LC_ALL, ""); utf8 = strcmp(nl_langinfo(CODESET), "UTF-8") == 0; - if (argc > 1) { - if ((yyin = fopen(argv[1], "r")) == NULL) - err(1, "fopen: %s", argv[1]); + interactive = isatty(STDIN_FILENO); + + if (argc == 1) { + current_file = "-"; + for (;;) { + int ret = yyparse(); + if (ret == 0) + break; + rv = EXIT_FAILURE; + } + } else for (int i = 1; i < argc; i++) { + if (strcmp(argv[i], "-") == 0) + yyin = stdin; + else if ((yyin = fopen(argv[i], "r")) == NULL) { + warn("fopen: %s", argv[1]); + rv = EXIT_FAILURE; + continue; + } + + current_file = argv[1]; + yyparse(); + fclose(yyin); } - return yyparse(); + + return rv; } void @@ -204,3 +229,16 @@ eqnfree(eqn_t *e) } free(e); } + +void +user_error(const char *fmt, ...) +{ + va_list ap; + va_start(ap, fmt); + vwarnx(fmt, ap); + va_end(ap); + if (interactive) + rv = EXIT_FAILURE; + else + exit(EXIT_FAILURE); +} |