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authorBryan Newbold <bnewbold@robocracy.org>2017-02-20 00:05:26 -0800
committerBryan Newbold <bnewbold@robocracy.org>2017-02-20 00:05:26 -0800
commitdeda2c0fd8689349fea2a900199a76ff7ecb319e (patch)
treec9726d54a0806a9b0c75e6c82db8692aea0053cf /ioext.c
parent3278b75942bdbe706f7a0fba87729bb1e935b68b (diff)
downloadscm-480dce1955c6d4d9463f2c0641be6f36576a0c5e.tar.gz
scm-480dce1955c6d4d9463f2c0641be6f36576a0c5e.zip
Import Upstream version 5d6upstream/5d6
Diffstat (limited to 'ioext.c')
-rw-r--r--ioext.c104
1 files changed, 90 insertions, 14 deletions
diff --git a/ioext.c b/ioext.c
index 1d7f68b..62ec8b2 100644
--- a/ioext.c
+++ b/ioext.c
@@ -15,26 +15,26 @@
* the Free Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111, USA.
*
* As a special exception, the Free Software Foundation gives permission
- * for additional uses of the text contained in its release of GUILE.
+ * for additional uses of the text contained in its release of SCM.
*
- * The exception is that, if you link the GUILE library with other files
+ * The exception is that, if you link the SCM library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
- * linking the GUILE library code into it.
+ * linking the SCM library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
- * Free Software Foundation under the name GUILE. If you copy
+ * Free Software Foundation under the name SCM. If you copy
* code from other Free Software Foundation releases into a copy of
- * GUILE, as the General Public License permits, the exception does
+ * SCM, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
- * If you write modifications of your own for GUILE, it is your choice
+ * If you write modifications of your own for SCM, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*/
@@ -70,8 +70,11 @@ SCM stat2scm P((struct stat *stat_temp));
#ifdef __FreeBSD__
# include <unistd.h>
#endif
+#ifdef __OpenBSD__
+# include <unistd.h>
+#endif
/* added by Denys Duchier */
-#ifdef __svr4__
+#ifdef __SVR4
# include <sys/types.h>
# include <unistd.h>
#endif
@@ -81,6 +84,12 @@ SCM stat2scm P((struct stat *stat_temp));
#ifdef GO32
# include <unistd.h>
#endif
+#ifdef __osf__
+# include <unistd.h>
+#endif
+#ifdef __MACH__
+# include <unistd.h>
+#endif
#ifndef STDC_HEADERS
int chdir P((const char *path));
@@ -198,6 +207,20 @@ SCM file_set_position(port, pos)
{
SCM ans;
ASSERT(NIMP(port) && OPFPORTP(port), port, ARG1, s_file_set_pos);
+#ifndef RECKLESS
+ if (TRACKED & SCM_PORTFLAGS(port)) {
+ if (INUM0==pos) {
+ int i = SCM_PORTNUM(port);
+ scm_port_table[i].line = 1L;
+ scm_port_table[i].col = 1;
+ }
+ else {
+ if (2 <= verbose)
+ scm_warn("Setting file position for tracked port: ", "", port);
+ SCM_PORTFLAGS(port) &= (~TRACKED);
+ }
+ }
+#endif
CLRDY(port); /* Clear ungetted char */
SYSCALL(ans = (fseek(STREAM(port), INUM(pos), 0)) ? BOOL_F : BOOL_T;);
#ifdef HAVE_PIPE
@@ -217,8 +240,9 @@ SCM reopen_file(filename, modes, port)
char cmodes[4];
long flags;
ASSERT(NIMP(filename) && STRINGP(filename), filename, ARG1, s_reopen_file);
- ASSERT(NIMP(modes) && STRINGP(modes), modes, ARG2, s_reopen_file);
+ ASSERT(NIMP(modes) && (STRINGP(modes) || SYMBOLP(modes)), modes, ARG2, s_reopen_file);
flags = mode_bits(CHARS(modes), cmodes);
+ ASSERT(flags, modes, ARG2, s_reopen_file);
DEFER_INTS;
ASSERT(NIMP(port) && FPORTP(port) && OPENP(port), port, ARG3, s_reopen_file);
SCM_OPENCALL(f = freopen(CHARS(filename), cmodes, STREAM(port)));
@@ -227,14 +251,13 @@ SCM reopen_file(filename, modes, port)
return BOOL_F;
}
else {
- SETSTREAM(port, f);
SCM_PORTFLAGS(port) = flags;
- CAR(port) = scm_port_entry(tc16_fport, flags);
+ SCM_SETFLAGS(port, flags);
if (BUF0 & flags)
i_setbuf0(port);
+ SCM_PORTDATA(port) = filename;
}
ALLOW_INTS;
- SCM_PORTDATA(port) = filename;
return port;
}
@@ -250,19 +273,25 @@ SCM l_dup(oldpt, modes)
FILE *f;
SCM newpt;
ASSERT(NIMP(oldpt) && OPFPORTP(oldpt), oldpt, ARG1, s_dup);
- ASSERT(NIMP(modes) && STRINGP(modes), modes, ARG2, s_dup);
+ ASSERT(NIMP(modes) && (STRINGP(modes) || SYMBOLP(modes)), modes, ARG2, s_dup);
flags = mode_bits(CHARS(modes), cmodes);
+ ASSERT(flags, modes, ARG2, s_dup);
NEWCELL(newpt);
DEFER_INTS;
SCM_OPENCALL(tfd = dup(fileno(STREAM(oldpt))));
if (-1==tfd) {ALLOW_INTS;return BOOL_F;};
SYSCALL(f = fdopen(tfd, cmodes););
if (!f) {
+ int lerrno = errno;
close(tfd);
+ errno = lerrno;
+# ifdef EINVAL
+ if (lerrno==EINVAL) wta(modes, (char *)ARG2, s_dup);
+# endif
wta(MAKINUM(tfd), (char *)NALLOC, s_port_type);
}
- SETSTREAM(newpt, f);
- CAR(newpt) = scm_port_entry(tc16_fport, flags);
+ newpt = scm_port_entry(f, tc16_fport, flags);
+ SCM_PORTDATA(newpt) = SCM_PORTDATA(oldpt);
if (BUF0 & flags)
i_setbuf0(newpt);
ALLOW_INTS;
@@ -690,6 +719,49 @@ static iproc subr2s[] = {
#endif
{0, 0}};
+#include <fcntl.h> /* for O_RDONLY, O_RDWR, O_EXCL */
+#ifdef O_EXCL
+SCM scm_try_create_file(fname, modes, perms)
+ SCM fname, modes, perms;
+{
+ SCM port;
+ FILE *f;
+ char cmodes[4];
+ long flags;
+ int fd, fdflags = O_CREAT | O_EXCL;
+# ifdef S_IROTH
+ mode_t cperms = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
+# else
+ int cperms = 0666;
+# endif
+ ASSERT(NIMP(fname) && STRINGP(fname), fname, ARG1, s_try_create_file);
+ ASSERT(NIMP(modes) && (STRINGP(modes) || SYMBOLP(modes)), modes, ARG2, s_try_create_file);
+ if (NNULLP(perms)) {
+ perms = CAR(perms);
+ ASSERT(INUMP(perms), perms, ARG3, s_try_create_file);
+# ifdef S_IROTH
+ cperms = (mode_t)INUM(perms);
+# else
+ cperms = INUM(perms);
+# endif
+ }
+ flags = mode_bits(CHARS(modes), cmodes);
+ ASSERT(flags, modes, ARG2, s_try_create_file);
+ fdflags |= (RDNG & flags) ? O_RDWR : O_WRONLY;
+ DEFER_INTS;
+ SCM_OPENCALL(fd = open(CHARS(fname), fdflags, cperms));
+ if (fd >= 0 && (f = fdopen(fd, cmodes))) {
+ port = scm_port_entry(f, tc16_fport, flags);
+ if (BUF0 & flags) i_setbuf0(port);
+ SCM_PORTDATA(port) = fname;
+ }
+ else
+ port = BOOL_F;
+ ALLOW_INTS;
+ return port;
+}
+#endif
+
static iproc subr2os[] = {
{s_file_set_pos, file_set_position},
{s_read_line1, read_line1},
@@ -702,6 +774,9 @@ void init_ioext()
init_iprocs(subr1s, tc7_subr_1);
init_iprocs(subr2os, tc7_subr_2o);
init_iprocs(subr2s, tc7_subr_2);
+#ifdef O_EXCL
+ make_subr(s_try_create_file, tc7_lsubr_2, scm_try_create_file);
+#endif
make_subr(s_reopen_file, tc7_subr_3, reopen_file);
#ifndef THINK_C
# ifndef MCH_AMIGA
@@ -733,6 +808,7 @@ void init_ioext()
add_feature("i/o-extensions");
add_feature("line-i/o");
scm_ldstr("\n\
+(define (file-exists? path) (access path \"r\"))\n\
(define (directory-for-each proc dirname . args)\n\
(define dir (opendir (if (symbol? dirname)\n\
(symbol->string dirname)\n\