/* Lisp parsing and input streams.
- Copyright (C) 1985, 1986, 1987, 1988, 1989,
- 1993, 1994, 1995 Free Software Foundation, Inc.
+ Copyright (C) 1985, 86, 87, 88, 89, 93, 94, 95, 1997
+ Free Software Foundation, Inc.
This file is part of GNU Emacs.
#ifndef standalone
#include "buffer.h"
+#include "charset.h"
#include <paths.h>
#include "commands.h"
#include "keyboard.h"
Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist;
Lisp_Object Qascii_character, Qload, Qload_file_name;
Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction;
+Lisp_Object Qinhibit_file_name_operation;
extern Lisp_Object Qevent_symbol_element_mask;
+extern Lisp_Object Qfile_exists_p;
/* non-zero if inside `load' */
int load_in_progress;
/* This is used to build the load history. */
Lisp_Object Vcurrent_load_list;
+/* List of files that were preloaded. */
+Lisp_Object Vpreloaded_file_list;
+
/* Name of file actually being read by `load'. */
Lisp_Object Vload_file_name;
/* Nonzero means load should forcibly load all dynamic doc strings. */
static int load_force_doc_strings;
+/* Function to use for loading an Emacs lisp source file (not
+ compiled) instead of readevalloop. */
+Lisp_Object Vload_source_file_function;
+
/* List of descriptors now open for Fload. */
static Lisp_Object load_descriptor_list;
\f
/* Handle unreading and rereading of characters.
Write READCHAR to read a character,
- UNREAD(c) to unread c to be read again. */
+ UNREAD(c) to unread c to be read again.
+
+ These macros actually read/unread a byte code, multibyte characters
+ are not handled here. The caller should manage them if necessary.
+ */
#define READCHAR readchar (readcharfun)
#define UNREAD(c) unreadchar (readcharfun, c)
return Qnil;
}
+ /* If FD is 0, that means openp found a remote file. */
+ if (fd == 0)
+ {
+ handler = Ffind_file_name_handler (found, Qload);
+ return call5 (handler, Qload, found, noerror, nomessage, Qt);
+ }
+
if (!bcmp (&(XSTRING (found)->data[XSTRING (found)->size - 4]),
".elc", 4))
{
}
XSTRING (found)->data[XSTRING (found)->size - 1] = 'c';
}
+ else
+ {
+ /* We are loading a source file (*.el). */
+ if (!NILP (Vload_source_file_function))
+ {
+ close (fd);
+ return call4 (Vload_source_file_function, found, file,
+ NILP (noerror) ? Qnil : Qt,
+ NILP (nomessage) ? Qnil : Qt);
+ }
+ }
#ifdef DOS_NT
close (fd);
error ("Failure to create stdio stream for %s", XSTRING (file)->data);
}
+ if (! NILP (Vpurify_flag))
+ Vpreloaded_file_list = Fcons (file, Vpreloaded_file_list);
+
if (NILP (nomessage))
{
if (newer)
record_unwind_protect (load_unwind, lispstream);
record_unwind_protect (load_descriptor_unwind, load_descriptor_list);
specbind (Qload_file_name, found);
+ specbind (Qinhibit_file_name_operation, Qnil);
load_descriptor_list
= Fcons (make_number (fileno (stream)), load_descriptor_list);
load_in_progress++;
If STOREPTR is nonzero, it points to a slot where the name of
the file actually found should be stored as a Lisp string.
- Nil is stored there on failure. */
+ nil is stored there on failure.
+
+ If the file we find is remote, return 0
+ but store the found remote file name in *STOREPTR.
+ We do not check for remote files if EXEC_ONLY is nonzero. */
int
openp (path, str, suffix, storeptr, exec_only)
register char *fn = buf;
int absolute = 0;
int want_size;
- register Lisp_Object filename;
+ Lisp_Object filename;
struct stat st;
struct gcpro gcpro1;
{
char *esuffix = (char *) index (nsuffix, ':');
int lsuffix = esuffix ? esuffix - nsuffix : strlen (nsuffix);
+ Lisp_Object handler;
/* Concatenate path element/specified name with the suffix.
If the directory starts with /:, remove that. */
if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */
strncat (fn, nsuffix, lsuffix);
- /* Ignore file if it's a directory. */
- if (stat (fn, &st) >= 0
- && (st.st_mode & S_IFMT) != S_IFDIR)
+ /* Check that the file exists and is not a directory. */
+ if (absolute)
+ handler = Qnil;
+ else
+ handler = Ffind_file_name_handler (filename, Qfile_exists_p);
+ if (! NILP (handler) && ! exec_only)
{
- /* Check that we can access or open it. */
- if (exec_only)
- fd = (access (fn, X_OK) == 0) ? 1 : -1;
- else
- fd = open (fn, O_RDONLY, 0);
+ Lisp_Object string;
+ int exists;
+
+ string = build_string (fn);
+ exists = ! NILP (exec_only ? Ffile_executable_p (string)
+ : Ffile_readable_p (string));
+ if (exists
+ && ! NILP (Ffile_directory_p (build_string (fn))))
+ exists = 0;
- if (fd >= 0)
+ if (exists)
{
/* We succeeded; return this descriptor and filename. */
if (storeptr)
*storeptr = build_string (fn);
UNGCPRO;
- return fd;
+ return 0;
+ }
+ }
+ else
+ {
+ int exists = (stat (fn, &st) >= 0
+ && (st.st_mode & S_IFMT) != S_IFDIR);
+ if (exists)
+ {
+ /* Check that we can access or open it. */
+ if (exec_only)
+ fd = (access (fn, X_OK) == 0) ? 1 : -1;
+ else
+ fd = open (fn, O_RDONLY, 0);
+
+ if (fd >= 0)
+ {
+ /* We succeeded; return this descriptor and filename. */
+ if (storeptr)
+ *storeptr = build_string (fn);
+ UNGCPRO;
+ return fd;
+ }
}
}
PRINTFLAG controls printing of output:\n\
nil means discard it; anything else is stream for print.\n\
\n\
-If there is no error, point does not move. If there is an error,\n\
-point remains at the end of the last character read from the buffer.")
+This function preserves the position of point.")
(buffer, printflag)
Lisp_Object buffer, printflag;
{
static int read_buffer_size;
static char *read_buffer;
+/* Read multibyte form and return it as a character. C is a first
+ byte of multibyte form, and rest of them are read from
+ READCHARFUN. */
+static int
+read_multibyte (c, readcharfun)
+ register int c;
+ Lisp_Object readcharfun;
+{
+ /* We need the actual character code of this multibyte
+ characters. */
+ unsigned char str[MAX_LENGTH_OF_MULTI_BYTE_FORM];
+ int len = 0;
+
+ str[len++] = c;
+ while ((c = READCHAR) >= 0xA0
+ && len < MAX_LENGTH_OF_MULTI_BYTE_FORM)
+ str[len++] = c;
+ UNREAD (c);
+ return STRING_CHAR (str, len);
+}
+
static int
read_escape (readcharfun)
Lisp_Object readcharfun;
}
default:
+ if (BASE_LEADING_CODE_P (c))
+ c = read_multibyte (c, readcharfun);
return c;
}
}
|| XVECTOR (tmp)->size > CHAR_TABLE_STANDARD_SLOTS + 10)
error ("Invalid size char-table");
XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp));
+ XCHAR_TABLE (tmp)->top = Qt;
return tmp;
}
+ else if (c == '^')
+ {
+ c = READCHAR;
+ if (c == '[')
+ {
+ Lisp_Object tmp;
+ tmp = read_vector (readcharfun);
+ if (XVECTOR (tmp)->size != SUB_CHAR_TABLE_STANDARD_SLOTS)
+ error ("Invalid size char-table");
+ XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp));
+ XCHAR_TABLE (tmp)->top = Qnil;
+ return tmp;
+ }
+ Fsignal (Qinvalid_read_syntax,
+ Fcons (make_string ("#^^", 3), Qnil));
+ }
Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#^", 2), Qnil));
}
if (c == '&')
if (c == '"')
{
Lisp_Object tmp, val;
- int size_in_chars = ((XFASTINT (length) + BITS_PER_CHAR)
+ int size_in_chars = ((XFASTINT (length) + BITS_PER_CHAR - 1)
/ BITS_PER_CHAR);
UNREAD (c);
tmp = read1 (readcharfun, pch, first_in_list);
- if (size_in_chars != XSTRING (tmp)->size)
+ if (size_in_chars != XSTRING (tmp)->size
+ /* We used to print 1 char too many
+ when the number of bits was a multiple of 8.
+ Accept such input in case it came from an old version. */
+ && ! (XFASTINT (length)
+ == (XSTRING (tmp)->size - 1) * BITS_PER_CHAR))
Fsignal (Qinvalid_read_syntax,
Fcons (make_string ("#&...", 5), Qnil));
if (c < 0) return Fsignal (Qend_of_file, Qnil);
if (c == '\\')
- XSETINT (val, read_escape (readcharfun));
- else
- XSETINT (val, c);
+ c = read_escape (readcharfun);
+ else if (BASE_LEADING_CODE_P (c))
+ c = read_multibyte (c, readcharfun);
+ XSETINT (val, c);
return val;
}
tem = oblookup (obarray, str, len);
if (SYMBOLP (tem))
return tem;
- return Fintern ((!NILP (Vpurify_flag)
- ? make_pure_string (str, len)
- : make_string (str, len)),
- obarray);
+ return Fintern (make_string (str, len), obarray);
}
/* Create an uninterned symbol with name STR. */
sym = Fmake_symbol (string);
XSYMBOL (sym)->obarray = obarray;
+ if (XSTRING (string)->data[0] == ':')
+ XSYMBOL (sym)->value = sym;
+
ptr = &XVECTOR (obarray)->contents[XINT (tem)];
if (SYMBOLP (*ptr))
XSYMBOL (sym)->next = XSYMBOL (*ptr);
for (i = XVECTOR (obarray)->size - 1; i >= 0; i--)
{
tail = XVECTOR (obarray)->contents[i];
- if (XFASTINT (tail) != 0)
+ if (SYMBOLP (tail))
while (1)
{
(*fn) (tail, arg);
Lisp dirs instead. */
Vload_path = nconc2 (Vload_path, dump_path);
+ /* Add leim under the installation dir, if it exists. */
+ tem = Fexpand_file_name (build_string ("leim"),
+ Vinstallation_directory);
+ tem1 = Ffile_exists_p (tem);
+ if (!NILP (tem1))
+ {
+ if (NILP (Fmember (tem, Vload_path)))
+ Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil));
+ }
+
/* Add site-list under the installation dir, if it exists. */
tem = Fexpand_file_name (build_string ("site-lisp"),
Vinstallation_directory);
if (NILP (Fmember (tem, Vload_path)))
Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil));
}
+
+ /* If Emacs was not built in the source directory,
+ and it is run from where it was built, add to load-path
+ the lisp, leim and site-lisp dirs under that directory. */
+
+ if (NILP (Fequal (Vinstallation_directory, Vsource_directory)))
+ {
+ Lisp_Object tem2;
+
+ tem = Fexpand_file_name (build_string ("src/Makefile"),
+ Vinstallation_directory);
+ tem1 = Ffile_exists_p (tem);
+
+ /* Don't be fooled if they moved the entire source tree
+ AFTER dumping Emacs. If the build directory is indeed
+ different from the source dir, src/Makefile.in and
+ src/Makefile will not be found together. */
+ tem = Fexpand_file_name (build_string ("src/Makefile.in"),
+ Vinstallation_directory);
+ tem2 = Ffile_exists_p (tem);
+ if (!NILP (tem1) && NILP (tem2))
+ {
+ tem = Fexpand_file_name (build_string ("lisp"),
+ Vsource_directory);
+
+ if (NILP (Fmember (tem, Vload_path)))
+ Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil));
+
+ tem = Fexpand_file_name (build_string ("leim"),
+ Vsource_directory);
+
+ if (NILP (Fmember (tem, Vload_path)))
+ Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil));
+
+ tem = Fexpand_file_name (build_string ("site-lisp"),
+ Vsource_directory);
+
+ if (NILP (Fmember (tem, Vload_path)))
+ Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil));
+ }
+ }
}
}
}
else
{
- /* ../lisp refers to the build directory.
- NORMAL refers to the lisp dir in the source directory. */
- Vload_path = Fcons (build_string ("../lisp"),
- decode_env_path (0, normal));
+ /* NORMAL refers to the lisp dir in the source directory. */
+ /* We used to add ../lisp at the front here, but
+ that caused trouble because it was copied from dump_path
+ into Vload_path, aboe, when Vinstallation_directory was non-nil.
+ It should be unnecessary. */
+ Vload_path = decode_env_path (0, normal);
dump_path = Vload_path;
}
#endif
The default is nil, which means use the function `read'.");
Vload_read_function = Qnil;
+ DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function,
+ "Function called in `load' for loading an Emacs lisp source file.\n\
+This function is for doing code conversion before reading the source file.\n\
+If nil, loading is done without any code conversion.\n\
+Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where\n\
+ FULLNAME is the full name of FILE.\n\
+See `load' for the meaning of the remaining arguments.");
+ Vload_source_file_function = Qnil;
+
DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings,
"Non-nil means `load' should force-load all dynamic doc strings.\n\
This is useful when the file being loaded is a temporary copy.");
= Fexpand_file_name (build_string ("../"),
Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH)));
+ DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list,
+ "List of files that were preloaded (when dumping Emacs).");
+ Vpreloaded_file_list = Qnil;
+
/* Vsource_directory was initialized in init_lread. */
load_descriptor_list = Qnil;
Qcomma_dot = intern (",.");
staticpro (&Qcomma_dot);
+ Qinhibit_file_name_operation = intern ("inhibit-file-name-operation");
+ staticpro (&Qinhibit_file_name_operation);
+
Qascii_character = intern ("ascii-character");
staticpro (&Qascii_character);