/* Record indices of function doc strings stored in a file.
-Copyright (C) 1985-1986, 1993-1995, 1997-2012 Free Software Foundation, Inc.
+Copyright (C) 1985-1986, 1993-1995, 1997-2014 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include <config.h>
+#include <errno.h>
#include <sys/types.h>
#include <sys/file.h> /* Must be after sys/types.h for USG. */
#include <fcntl.h>
#include "buffer.h"
#include "keyboard.h"
#include "keymap.h"
-#include "buildobj.h"
Lisp_Object Qfunction_documentation;
}
/* Extract a doc string from a file. FILEPOS says where to get it.
- If it is an integer, use that position in the standard DOC-... file.
+ If it is an integer, use that position in the standard DOC file.
If it is (FILE . INTEGER), use FILE as the file name
and INTEGER as the position in that file.
But if INTEGER is negative, make it positive.
ptrdiff_t minsize;
int offset;
EMACS_INT position;
- Lisp_Object file, tem;
+ Lisp_Object file, tem, pos;
USE_SAFE_ALLOCA;
if (INTEGERP (filepos))
{
file = Vdoc_file_name;
- position = XINT (filepos);
+ pos = filepos;
}
else if (CONSP (filepos))
{
file = XCAR (filepos);
- position = XINT (XCDR (filepos));
+ pos = XCDR (filepos);
}
else
return Qnil;
- if (position < 0)
- position = - position;
+ position = eabs (XINT (pos));
if (!STRINGP (Vdoc_directory))
return Qnil;
}
#endif
if (fd < 0)
- return concat3 (build_string ("Cannot open doc string file \""),
- file, build_string ("\"\n"));
+ {
+ SAFE_FREE ();
+ return concat3 (build_string ("Cannot open doc string file \""),
+ file, build_string ("\"\n"));
+ }
}
+ dynwind_begin ();
+ record_unwind_protect_int (close_file_unwind, fd);
/* Seek only to beginning of disk block. */
/* Make sure we read at least 1024 bytes before `position'
offset = min (position, max (1024, position % (8 * 1024)));
if (TYPE_MAXIMUM (off_t) < position
|| lseek (fd, position - offset, 0) < 0)
- {
- emacs_close (fd);
- error ("Position %"pI"d out of range in doc string file \"%s\"",
- position, name);
- }
-
- SAFE_FREE ();
+ error ("Position %"pI"d out of range in doc string file \"%s\"",
+ position, name);
/* Read the doc string into get_doc_string_buffer.
P points beyond the data just read. */
if (space_left <= 0)
{
ptrdiff_t in_buffer = p - get_doc_string_buffer;
- get_doc_string_buffer =
- xpalloc (get_doc_string_buffer, &get_doc_string_buffer_size,
- 16 * 1024, -1, 1);
+ get_doc_string_buffer
+ = xpalloc (get_doc_string_buffer, &get_doc_string_buffer_size,
+ 16 * 1024, -1, 1);
p = get_doc_string_buffer + in_buffer;
space_left = (get_doc_string_buffer_size - 1
- (p - get_doc_string_buffer));
space_left = 1024 * 8;
nread = emacs_read (fd, p, space_left);
if (nread < 0)
- {
- emacs_close (fd);
- error ("Read error on documentation file");
- }
+ report_file_error ("Read error on documentation file", file);
p[nread] = 0;
if (!nread)
break;
}
p += nread;
}
- emacs_close (fd);
+ dynwind_end ();
+ SAFE_FREE ();
/* Sanity checking. */
if (CONSP (filepos))
{
int test = 1;
- if (get_doc_string_buffer[offset - test++] != ' ')
- return Qnil;
- while (get_doc_string_buffer[offset - test] >= '0'
- && get_doc_string_buffer[offset - test] <= '9')
- test++;
- if (get_doc_string_buffer[offset - test++] != '@'
- || get_doc_string_buffer[offset - test] != '#')
- return Qnil;
+ /* A dynamic docstring should be either at the very beginning of a "#@
+ comment" or right after a dynamic docstring delimiter (in case we
+ pack several such docstrings within the same comment). */
+ if (get_doc_string_buffer[offset - test] != '\037')
+ {
+ if (get_doc_string_buffer[offset - test++] != ' ')
+ return Qnil;
+ while (get_doc_string_buffer[offset - test] >= '0'
+ && get_doc_string_buffer[offset - test] <= '9')
+ test++;
+ if (get_doc_string_buffer[offset - test++] != '@'
+ || get_doc_string_buffer[offset - test] != '#')
+ return Qnil;
+ }
}
else
{
else
{
/* The data determines whether the string is multibyte. */
- ptrdiff_t nchars =
- multibyte_chars_in_text (((unsigned char *) get_doc_string_buffer
- + offset),
- to - (get_doc_string_buffer + offset));
+ ptrdiff_t nchars
+ = multibyte_chars_in_text (((unsigned char *) get_doc_string_buffer
+ + offset),
+ to - (get_doc_string_buffer + offset));
return make_string_from_bytes (get_doc_string_buffer + offset,
nchars,
to - (get_doc_string_buffer + offset));
doc = Qnil;
+ if (SYMBOLP (function))
+ {
+ Lisp_Object tem = Fget (function, Qfunction_documentation);
+ if (!NILP (tem))
+ return Fdocumentation_property (function, Qfunction_documentation,
+ raw);
+ }
+
fun = Findirect_function (function, Qnil);
if (CONSP (fun) && EQ (XCAR (fun), Qmacro))
fun = XCDR (fun);
xsignal1 (Qinvalid_function, fun);
}
- /* Check for a dynamic docstring. These come with
- a dynamic-docstring-function text property. */
- if (STRINGP (doc))
- {
- Lisp_Object func
- = Fget_text_property (make_number (0),
- intern ("dynamic-docstring-function"),
- doc);
- if (!NILP (func))
- /* Pass both `doc' and `function' since `function' can be needed, and
- finding `doc' can be annoying: calling `documentation' is not an
- option because it would infloop. */
- doc = call2 (func, doc, function);
- }
-
/* If DOC is 0, it's typically because of a dumped file missing
from the DOC file (bug in src/Makefile.in). */
if (EQ (doc, make_number (0)))
docstring, since we've found a docstring for it. */
if ((ASIZE (fun) & PSEUDOVECTOR_SIZE_MASK) > COMPILED_DOC_STRING)
ASET (fun, COMPILED_DOC_STRING, make_number (offset));
+ else
+ message ("No docstring slot for %s",
+ SYMBOLP (obj) ? SSDATA (SYMBOL_NAME (obj)) : "<anonymous>");
}
}
-static const char buildobj[] = BUILDOBJ;
DEFUN ("Snarf-documentation", Fsnarf_documentation, Ssnarf_documentation,
1, 1, 0,
Lisp_Object sym;
char *p, *name;
bool skip_file = 0;
+ ptrdiff_t count;
+ /* Preloaded defcustoms using custom-initialize-delay are added to
+ this list, but kept unbound. See http://debbugs.gnu.org/11565 */
+ Lisp_Object delayed_init =
+ find_symbol_value (intern ("custom-delayed-init-variables"));
+
+ if (EQ (delayed_init, Qunbound)) delayed_init = Qnil;
CHECK_STRING (filename);
/* Vbuild_files is nil when temacs is run, and non-nil after that. */
if (NILP (Vbuild_files))
- {
- const char *beg, *end;
-
- for (beg = buildobj; *beg; beg = end)
- {
- ptrdiff_t len;
-
- while (*beg && c_isspace (*beg)) ++beg;
-
- for (end = beg; *end && ! c_isspace (*end); ++end)
- if (*end == '/') beg = end+1; /* skip directory part */
-
- len = end - beg;
- if (len > 4 && end[-4] == '.' && end[-3] == 'o')
- len -= 2; /* Just take .o if it ends in .obj */
-
- if (len > 0)
- Vbuild_files = Fcons (make_string (beg, len), Vbuild_files);
- }
- Vbuild_files = Fpurecopy (Vbuild_files);
- }
+ {
+ static char const *const buildobj[] =
+ {
+ #include "buildobj.h"
+ };
+ int i = ARRAYELTS (buildobj);
+ while (0 <= --i)
+ Vbuild_files = Fcons (build_string (buildobj[i]), Vbuild_files);
+ Vbuild_files = Fpurecopy (Vbuild_files);
+ }
fd = emacs_open (name, O_RDONLY, 0);
if (fd < 0)
- report_file_error ("Opening doc string file",
- Fcons (build_string (name), Qnil));
+ {
+ int open_errno = errno;
+ report_file_errno ("Opening doc string file", build_string (name),
+ open_errno);
+ }
+ dynwind_begin ();
+ record_unwind_protect_int (close_file_unwind, fd);
Vdoc_file_name = filename;
filled = 0;
pos = 0;
break;
buf[filled] = 0;
- p = buf;
end = buf + (filled < 512 ? filled : filled - 128);
- while (p != end && *p != '\037') p++;
+ p = memchr (buf, '\037', end - buf);
/* p points to ^_Ffunctionname\n or ^_Vvarname\n or ^_Sfilename\n. */
- if (p != end)
+ if (p)
{
end = strchr (p, '\n');
/* Install file-position as variable-documentation property
and make it negative for a user-variable
(doc starts with a `*'). */
- if (!NILP (Fboundp (sym)))
+ if (!NILP (Fboundp (sym))
+ || !NILP (Fmemq (sym, delayed_init)))
Fput (sym, Qvariable_documentation,
make_number ((pos + end + 1 - buf)
* (end[1] == '*' ? -1 : 1)));
filled -= end - buf;
memmove (buf, end, filled);
}
- emacs_close (fd);
+ dynwind_end ();
return Qnil;
}
\f
thus, \\=\\=\\=\\= puts \\=\\= into the output, and \\=\\=\\=\\[ puts \\=\\[ into the output.
Return the original STRING if no substitutions are made.
-Otherwise, return a new string, without any text properties. */)
+Otherwise, return a new string. */)
(Lisp_Object string)
{
char *buf;
or a specified local map (which means search just that and the
global map). If non-nil, it might come from Voverriding_local_map,
or from a \\<mapname> construct in STRING itself.. */
- keymap = KVAR (current_kboard, Voverriding_terminal_local_map);
- if (NILP (keymap))
- keymap = Voverriding_local_map;
+ keymap = Voverriding_local_map;
bsize = SBYTES (string);
- bufp = buf = xmalloc (bsize);
+ bufp = buf = xmalloc_atomic (bsize);
strp = SDATA (string);
while (strp < SDATA (string) + SBYTES (string))
/* This is for computing the SHADOWS arg for describe_map_tree. */
Lisp_Object active_maps = Fcurrent_active_maps (Qnil, Qnil);
Lisp_Object earlier_maps;
+ ptrdiff_t count = SPECPDL_INDEX ();
changed = 1;
strp += 2; /* skip \{ or \< */
/* Now switch to a temp buffer. */
oldbuf = current_buffer;
set_buffer_internal (XBUFFER (Vprin1_to_string_buffer));
+ /* This is for an unusual case where some after-change
+ function uses 'format' or 'prin1' or something else that
+ will thrash Vprin1_to_string_buffer we are using. */
+ specbind (Qinhibit_modification_hooks, Qt);
if (NILP (tem))
{
If this one's not active, get nil. */
earlier_maps = Fcdr (Fmemq (tem, Freverse (active_maps)));
describe_map_tree (tem, 1, Fnreverse (earlier_maps),
- Qnil, (char *)0, 1, 0, 0, 1);
+ Qnil, 0, 1, 0, 0, 1);
}
tem = Fbuffer_string ();
Ferase_buffer ();
set_buffer_internal (oldbuf);
+ unbind_to (count, Qnil);
subst_string:
start = SDATA (tem);
else
tem = string;
xfree (buf);
- RETURN_UNGCPRO (tem);
+ return tem;
}
\f
void
syms_of_doc (void)
{
+#include "doc.x"
+
DEFSYM (Qfunction_documentation, "function-documentation");
DEFVAR_LISP ("internal-doc-file-name", Vdoc_file_name,
DEFVAR_LISP ("build-files", Vbuild_files,
doc: /* A list of files used to build this Emacs binary. */);
Vbuild_files = Qnil;
-
- defsubr (&Sdocumentation);
- defsubr (&Sdocumentation_property);
- defsubr (&Ssnarf_documentation);
- defsubr (&Ssubstitute_command_keys);
}
HCoop / bpt / emacs.git / blobdiff