diff options
Diffstat (limited to 'miscutils/bc.c')
| -rw-r--r-- | miscutils/bc.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/miscutils/bc.c b/miscutils/bc.c index 2cfe87b1e..24e4b6392 100644 --- a/miscutils/bc.c +++ b/miscutils/bc.c @@ -191,6 +191,7 @@ typedef enum BcStatus { BC_STATUS_SUCCESS = 0, BC_STATUS_FAILURE = 1, BC_STATUS_PARSE_EMPTY_EXP = 2, // bc_parse_expr() uses this + BC_STATUS_EOF = 3, // bc_vm_stdin() uses this } BcStatus; #define BC_VEC_INVALID_IDX ((size_t) -1) @@ -754,7 +755,6 @@ typedef unsigned long (*BcProgramBuiltIn)(BcNum *); struct globals { IF_FEATURE_BC_SIGNALS(smallint ttyin;) IF_FEATURE_CLEAN_UP(smallint exiting;) - smallint eof; char sbgn; char send; @@ -1270,10 +1270,12 @@ static int push_input_byte(BcVec *vec, char c) static BcStatus bc_read_line(BcVec *vec, const char *prompt) { + BcStatus s; bool bad_chars; if (G_posix) prompt = ""; + s = BC_STATUS_SUCCESS; do { int c; @@ -1299,7 +1301,7 @@ static BcStatus bc_read_line(BcVec *vec, const char *prompt) if (n <= 0) { // read errors or EOF, or ^D, or ^C if (n == 0) // ^C goto intr; - G.eof = 1; + s = BC_STATUS_EOF; break; } i = 0; @@ -1329,7 +1331,7 @@ static BcStatus bc_read_line(BcVec *vec, const char *prompt) if (c == EOF) { if (ferror(stdin)) quit(); // this emits error message - G.eof = 1; + s = BC_STATUS_EOF; // Note: EOF does not append '\n', therefore: // printf 'print 123\n' | bc - works // printf 'print 123' | bc - fails (syntax error) @@ -1342,7 +1344,7 @@ static BcStatus bc_read_line(BcVec *vec, const char *prompt) bc_vec_pushZeroByte(vec); - return BC_STATUS_SUCCESS; + return s; } static char* bc_read_file(const char *path) @@ -7129,8 +7131,7 @@ static BcStatus bc_vm_stdin(void) // with a backslash to the parser. The reason for that is because the parser // treats a backslash+newline combo as whitespace, per the bc spec. In that // case, and for strings and comments, the parser will expect more stuff. - s = BC_STATUS_SUCCESS; - while (!G.eof && (s = bc_read_line(&buf, ">>> ")) == BC_STATUS_SUCCESS) { + while ((s = bc_read_line(&buf, ">>> ")) == BC_STATUS_SUCCESS) { char *string = buf.v; @@ -7187,6 +7188,8 @@ static BcStatus bc_vm_stdin(void) bc_vec_pop_all(&buffer); } + if (s == BC_STATUS_EOF) // input EOF (^D) is not an error + s = BC_STATUS_SUCCESS; if (str) { s = bc_error("string end could not be found"); |