diff options
Diffstat (limited to 'lib/libedit/read.c')
-rw-r--r-- | lib/libedit/read.c | 105 |
1 files changed, 70 insertions, 35 deletions
diff --git a/lib/libedit/read.c b/lib/libedit/read.c index 0caba5d..ed2b609 100644 --- a/lib/libedit/read.c +++ b/lib/libedit/read.c @@ -29,7 +29,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $NetBSD: read.c,v 1.40 2007/03/01 21:41:45 christos Exp $ + * $NetBSD: read.c,v 1.52 2009/07/22 15:57:00 christos Exp $ */ #if !defined(lint) && !defined(SCCSID) @@ -49,7 +49,7 @@ __FBSDID("$FreeBSD$"); #include <stdlib.h> #include "el.h" -#define OKCMD -1 +#define OKCMD -1 /* must be -1! */ private int read__fixio(int, int); private int read_preread(EditLine *); @@ -170,7 +170,7 @@ read__fixio(int fd __unused, int e) return (e ? 0 : -1); case EINTR: - return (0); + return (-1); default: return (-1); @@ -222,7 +222,7 @@ el_push(EditLine *el, const char *str) ma->level--; } term_beep(el); - term__flush(); + term__flush(el); } @@ -235,9 +235,12 @@ read_getcmd(EditLine *el, el_action_t *cmdnum, char *ch) el_action_t cmd; int num; + el->el_errno = 0; do { - if ((num = el_getc(el, ch)) != 1) /* if EOF or error */ + if ((num = el_getc(el, ch)) != 1) { /* if EOF or error */ + el->el_errno = num == 0 ? 0 : errno; return (num); + } #ifdef KANJI if ((*ch & 0200)) { @@ -286,18 +289,25 @@ read_getcmd(EditLine *el, el_action_t *cmdnum, char *ch) private int read_char(EditLine *el, char *cp) { - int num_read; + ssize_t num_read; int tried = 0; - while ((num_read = read(el->el_infd, cp, 1)) == -1) + again: + el->el_signal->sig_no = 0; + while ((num_read = read(el->el_infd, cp, 1)) == -1) { + if (el->el_signal->sig_no == SIGCONT) { + sig_set(el); + el_set(el, EL_REFRESH); + goto again; + } if (!tried && read__fixio(el->el_infd, errno) == 0) tried = 1; else { *cp = '\0'; return (-1); } - - return (num_read); + } + return (int)num_read; } /* read_pop(): @@ -309,8 +319,9 @@ read_pop(c_macro_t *ma) int i; el_free(ma->macro[0]); - for (i = ma->level--; i > 0; i--) - ma->macro[i - 1] = ma->macro[i]; + for (i = 0; i < ma->level; i++) + ma->macro[i] = ma->macro[i + 1]; + ma->level--; ma->offset = 0; } @@ -323,7 +334,7 @@ el_getc(EditLine *el, char *cp) int num_read; c_macro_t *ma = &el->el_chared.c_macro; - term__flush(); + term__flush(el); for (;;) { if (ma->level < 0) { if (!read_preread(el)) @@ -382,7 +393,7 @@ read_prepare(EditLine *el) re_refresh(el); /* print the prompt */ if (el->el_flags & UNBUFFERED) - term__flush(); + term__flush(el); } protected void @@ -402,15 +413,20 @@ el_gets(EditLine *el, int *nread) int num; /* how many chars we have read at NL */ char ch; int crlf = 0; + int nrb; #ifdef FIONREAD c_macro_t *ma = &el->el_chared.c_macro; #endif /* FIONREAD */ + if (nread == NULL) + nread = &nrb; + *nread = 0; + if (el->el_flags & NO_TTY) { char *cp = el->el_line.buffer; size_t idx; - while ((*el->el_read.read_char)(el, cp) == 1) { + while ((num = (*el->el_read.read_char)(el, cp)) == 1) { /* make sure there is space for next character */ if (cp + 1 >= el->el_line.limit) { idx = (cp - el->el_line.buffer); @@ -424,12 +440,16 @@ el_gets(EditLine *el, int *nread) if (cp[-1] == '\r' || cp[-1] == '\n') break; } + if (num == -1) { + if (errno == EINTR) + cp = el->el_line.buffer; + el->el_errno = errno; + } el->el_line.cursor = el->el_line.lastchar = cp; *cp = '\0'; - if (nread) - *nread = el->el_line.cursor - el->el_line.buffer; - return (el->el_line.buffer); + *nread = (int)(el->el_line.cursor - el->el_line.buffer); + goto done; } @@ -440,8 +460,8 @@ el_gets(EditLine *el, int *nread) (void) ioctl(el->el_infd, FIONREAD, (ioctl_t) & chrs); if (chrs == 0) { if (tty_rawmode(el) < 0) { - if (nread) - *nread = 0; + errno = 0; + *nread = 0; return (NULL); } } @@ -454,14 +474,15 @@ el_gets(EditLine *el, int *nread) if (el->el_flags & EDIT_DISABLED) { char *cp; size_t idx; + if ((el->el_flags & UNBUFFERED) == 0) cp = el->el_line.buffer; else cp = el->el_line.lastchar; - term__flush(); + term__flush(el); - while ((*el->el_read.read_char)(el, cp) == 1) { + while ((num = (*el->el_read.read_char)(el, cp)) == 1) { /* make sure there is space next character */ if (cp + 1 >= el->el_line.limit) { idx = (cp - el->el_line.buffer); @@ -469,8 +490,6 @@ el_gets(EditLine *el, int *nread) break; cp = &el->el_line.buffer[idx]; } - if (*cp == 4) /* ought to be stty eof */ - break; cp++; crlf = cp[-1] == '\r' || cp[-1] == '\n'; if (el->el_flags & UNBUFFERED) @@ -479,11 +498,15 @@ el_gets(EditLine *el, int *nread) break; } + if (num == -1) { + if (errno == EINTR) + cp = el->el_line.buffer; + el->el_errno = errno; + } + el->el_line.cursor = el->el_line.lastchar = cp; *cp = '\0'; - if (nread) - *nread = el->el_line.cursor - el->el_line.buffer; - return (el->el_line.buffer); + goto done; } for (num = OKCMD; num == OKCMD;) { /* while still editing this @@ -499,7 +522,13 @@ el_gets(EditLine *el, int *nread) #endif /* DEBUG_READ */ break; } - if ((unsigned int)cmdnum >= el->el_map.nfunc) { /* BUG CHECK command */ + if (el->el_errno == EINTR) { + el->el_line.buffer[0] = '\0'; + el->el_line.lastchar = + el->el_line.cursor = el->el_line.buffer; + break; + } + if ((unsigned int)cmdnum >= (unsigned int)el->el_map.nfunc) { /* BUG CHECK command */ #ifdef DEBUG_EDIT (void) fprintf(el->el_errfile, "ERROR: illegal command from key 0%o\r\n", ch); @@ -581,7 +610,7 @@ el_gets(EditLine *el, int *nread) break; case CC_NEWLINE: /* normal end of line */ - num = el->el_line.lastchar - el->el_line.buffer; + num = (int)(el->el_line.lastchar - el->el_line.buffer); break; case CC_FATAL: /* fatal error, reset to known state */ @@ -602,7 +631,7 @@ el_gets(EditLine *el, int *nread) "*** editor ERROR ***\r\n\n"); #endif /* DEBUG_READ */ term_beep(el); - term__flush(); + term__flush(el); break; } el->el_state.argument = 1; @@ -612,15 +641,21 @@ el_gets(EditLine *el, int *nread) break; } - term__flush(); /* flush any buffered output */ + term__flush(el); /* flush any buffered output */ /* make sure the tty is set up correctly */ if ((el->el_flags & UNBUFFERED) == 0) { read_finish(el); - if (nread) - *nread = num; + *nread = num != -1 ? num : 0; } else { - if (nread) - *nread = el->el_line.lastchar - el->el_line.buffer; + *nread = (int)(el->el_line.lastchar - el->el_line.buffer); } - return (num ? el->el_line.buffer : NULL); +done: + if (*nread == 0) { + if (num == -1) { + *nread = -1; + errno = el->el_errno; + } + return NULL; + } else + return el->el_line.buffer; } |