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merge with 1.3.3;

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Alexander Vdolainen 2019-11-12 14:20:38 +02:00
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1
.gitignore vendored
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@ -41,3 +41,4 @@ debian/libsexpr*
debian/files debian/files
debian/tmp debian/tmp
compile compile
INSTALL

368
INSTALL
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@ -1,368 +0,0 @@
Installation Instructions
*************************
Copyright (C) 1994-1996, 1999-2002, 2004-2016 Free Software
Foundation, Inc.
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved. This file is offered as-is,
without warranty of any kind.
Basic Installation
==================
Briefly, the shell command './configure && make && make install'
should configure, build, and install this package. The following
more-detailed instructions are generic; see the 'README' file for
instructions specific to this package. Some packages provide this
'INSTALL' file but do not implement all of the features documented
below. The lack of an optional feature in a given package is not
necessarily a bug. More recommendations for GNU packages can be found
in *note Makefile Conventions: (standards)Makefile Conventions.
The 'configure' shell script attempts to guess correct values for
various system-dependent variables used during compilation. It uses
those values to create a 'Makefile' in each directory of the package.
It may also create one or more '.h' files containing system-dependent
definitions. Finally, it creates a shell script 'config.status' that
you can run in the future to recreate the current configuration, and a
file 'config.log' containing compiler output (useful mainly for
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It can also use an optional file (typically called 'config.cache' and
enabled with '--cache-file=config.cache' or simply '-C') that saves the
results of its tests to speed up reconfiguring. Caching is disabled by
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If you need to do unusual things to compile the package, please try
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diffs or instructions to the address given in the 'README' so they can
be considered for the next release. If you are using the cache, and at
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may remove or edit it.
The file 'configure.ac' (or 'configure.in') is used to create
'configure' by a program called 'autoconf'. You need 'configure.ac' if
you want to change it or regenerate 'configure' using a newer version of
'autoconf'.
The simplest way to compile this package is:
1. 'cd' to the directory containing the package's source code and type
'./configure' to configure the package for your system.
Running 'configure' might take a while. While running, it prints
some messages telling which features it is checking for.
2. Type 'make' to compile the package.
3. Optionally, type 'make check' to run any self-tests that come with
the package, generally using the just-built uninstalled binaries.
4. Type 'make install' to install the programs and any data files and
documentation. When installing into a prefix owned by root, it is
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user, and only the 'make install' phase executed with root
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5. Optionally, type 'make installcheck' to repeat any self-tests, but
this time using the binaries in their final installed location.
This target does not install anything. Running this target as a
regular user, particularly if the prior 'make install' required
root privileges, verifies that the installation completed
correctly.
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source code directory by typing 'make clean'. To also remove the
files that 'configure' created (so you can compile the package for
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all sorts of other programs in order to regenerate files that came
with the distribution.
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files again. In practice, not all packages have tested that
uninstallation works correctly, even though it is required by the
GNU Coding Standards.
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distcheck', which can by used by developers to test that all other
targets like 'make install' and 'make uninstall' work correctly.
This target is generally not run by end users.
Compilers and Options
=====================
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the 'configure' script does not know about. Run './configure --help'
for details on some of the pertinent environment variables.
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by setting variables in the command line or in the environment. Here is
an example:
./configure CC=c99 CFLAGS=-g LIBS=-lposix
*Note Defining Variables::, for more details.
Compiling For Multiple Architectures
====================================
You can compile the package for more than one kind of computer at the
same time, by placing the object files for each architecture in their
own directory. To do this, you can use GNU 'make'. 'cd' to the
directory where you want the object files and executables to go and run
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code in the directory that 'configure' is in and in '..'. This is known
as a "VPATH" build.
With a non-GNU 'make', it is safer to compile the package for one
architecture at a time in the source code directory. After you have
installed the package for one architecture, use 'make distclean' before
reconfiguring for another architecture.
On MacOS X 10.5 and later systems, you can create libraries and
executables that work on multiple system types--known as "fat" or
"universal" binaries--by specifying multiple '-arch' options to the
compiler but only a single '-arch' option to the preprocessor. Like
this:
./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
CPP="gcc -E" CXXCPP="g++ -E"
This is not guaranteed to produce working output in all cases, you
may have to build one architecture at a time and combine the results
using the 'lipo' tool if you have problems.
Installation Names
==================
By default, 'make install' installs the package's commands under
'/usr/local/bin', include files under '/usr/local/include', etc. You
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'configure' the option '--prefix=PREFIX', where PREFIX must be an
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The first method involves providing an override variable for each
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prefix=/alternate/directory' will choose an alternate location for all
directory configuration variables that were expressed in terms of
'${prefix}'. Any directories that were specified during 'configure',
but not in terms of '${prefix}', must each be overridden at install time
for the entire installation to be relocated. The approach of makefile
variable overrides for each directory variable is required by the GNU
Coding Standards, and ideally causes no recompilation. However, some
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that end up requiring recompilation when using this method, particularly
noticeable in packages that use GNU Libtool.
The second method involves providing the 'DESTDIR' variable. For
example, 'make install DESTDIR=/alternate/directory' will prepend
'/alternate/directory' before all installation names. The approach of
'DESTDIR' overrides is not required by the GNU Coding Standards, and
does not work on platforms that have drive letters. On the other hand,
it does better at avoiding recompilation issues, and works well even
when some directory options were not specified in terms of '${prefix}'
at 'configure' time.
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=================
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with an extra prefix or suffix on their names by giving 'configure' the
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'README' should mention any '--enable-' and '--with-' options that the
package recognizes.
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you can use the 'configure' options '--x-includes=DIR' and
'--x-libraries=DIR' to specify their locations.
Some packages offer the ability to configure how verbose the
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--enable-silent-rules' sets the default to minimal output, which can be
overridden with 'make V=1'; while running './configure
--disable-silent-rules' sets the default to verbose, which can be
overridden with 'make V=0'.
Particular systems
==================
On HP-UX, the default C compiler is not ANSI C compatible. If GNU CC
is not installed, it is recommended to use the following options in
order to use an ANSI C compiler:
./configure CC="cc -Ae -D_XOPEN_SOURCE=500"
and if that doesn't work, install pre-built binaries of GCC for HP-UX.
HP-UX 'make' updates targets which have the same time stamps as their
prerequisites, which makes it generally unusable when shipped generated
files such as 'configure' are involved. Use GNU 'make' instead.
On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
parse its '<wchar.h>' header file. The option '-nodtk' can be used as a
workaround. If GNU CC is not installed, it is therefore recommended to
try
./configure CC="cc"
and if that doesn't work, try
./configure CC="cc -nodtk"
On Solaris, don't put '/usr/ucb' early in your 'PATH'. This
directory contains several dysfunctional programs; working variants of
these programs are available in '/usr/bin'. So, if you need '/usr/ucb'
in your 'PATH', put it _after_ '/usr/bin'.
On Haiku, software installed for all users goes in '/boot/common',
not '/usr/local'. It is recommended to use the following options:
./configure --prefix=/boot/common
Specifying the System Type
==========================
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automatically, but needs to determine by the type of machine the package
will run on. Usually, assuming the package is built to be run on the
_same_ architectures, 'configure' can figure that out, but if it prints
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CPU-COMPANY-SYSTEM
where SYSTEM can have one of these forms:
OS
KERNEL-OS
See the file 'config.sub' for the possible values of each field. If
'config.sub' isn't included in this package, then this package doesn't
need to know the machine type.
If you are _building_ compiler tools for cross-compiling, you should
use the option '--target=TYPE' to select the type of system they will
produce code for.
If you want to _use_ a cross compiler, that generates code for a
platform different from the build platform, you should specify the
"host" platform (i.e., that on which the generated programs will
eventually be run) with '--host=TYPE'.
Sharing Defaults
================
If you want to set default values for 'configure' scripts to share,
you can create a site shell script called 'config.site' that gives
default values for variables like 'CC', 'cache_file', and 'prefix'.
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'PREFIX/etc/config.site' if it exists. Or, you can set the
'CONFIG_SITE' environment variable to the location of the site script.
A warning: not all 'configure' scripts look for a site script.
Defining Variables
==================
Variables not defined in a site shell script can be set in the
environment passed to 'configure'. However, some packages may run
configure again during the build, and the customized values of these
variables may be lost. In order to avoid this problem, you should set
them in the 'configure' command line, using 'VAR=value'. For example:
./configure CC=/usr/local2/bin/gcc
causes the specified 'gcc' to be used as the C compiler (unless it is
overridden in the site shell script).
Unfortunately, this technique does not work for 'CONFIG_SHELL' due to an
Autoconf limitation. Until the limitation is lifted, you can use this
workaround:
CONFIG_SHELL=/bin/bash ./configure CONFIG_SHELL=/bin/bash
'configure' Invocation
======================
'configure' recognizes the following options to control how it
operates.
'--help'
'-h'
Print a summary of all of the options to 'configure', and exit.
'--help=short'
'--help=recursive'
Print a summary of the options unique to this package's
'configure', and exit. The 'short' variant lists options used only
in the top level, while the 'recursive' variant lists options also
present in any nested packages.
'--version'
'-V'
Print the version of Autoconf used to generate the 'configure'
script, and exit.
'--cache-file=FILE'
Enable the cache: use and save the results of the tests in FILE,
traditionally 'config.cache'. FILE defaults to '/dev/null' to
disable caching.
'--config-cache'
'-C'
Alias for '--cache-file=config.cache'.
'--quiet'
'--silent'
'-q'
Do not print messages saying which checks are being made. To
suppress all normal output, redirect it to '/dev/null' (any error
messages will still be shown).
'--srcdir=DIR'
Look for the package's source code in directory DIR. Usually
'configure' can determine that directory automatically.
'--prefix=DIR'
Use DIR as the installation prefix. *note Installation Names:: for
more details, including other options available for fine-tuning the
installation locations.
'--no-create'
'-n'
Run the configure checks, but stop before creating any output
files.
'configure' also accepts some other, not widely useful, options. Run
'configure --help' for more details.

41
include/sexpr/sexp.h
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@ -567,13 +567,30 @@ typedef struct sexp_iowrap {
size_t cnt; size_t cnt;
} sexp_iowrap_t; } sexp_iowrap_t;
/* TODO: doxygen? more doxygen */ /**
* \ingroup IO
* This structure is a wrapper around a the parsing infrastructure (continuation
* and a buffer) required to parse off of it. This is used so that routines can
* hide the loops and details required to accumulate up data read off of the buffer.
*/
typedef struct sexp_cstrwrap { typedef struct sexp_cstrwrap {
pcont_t *cc; /* continuation used to parse */ /**
const char *seval; /* pointer used to the original piece */ * Continuation used to parse off of the given buffer
*/
pcont_t *cc;
/**
* A pointer to the cstring data to parse
*/
const char *seval;
/**
* different counters used to have a deal with source and buffer
*/
size_t rl, cnt; size_t rl, cnt;
size_t sln; size_t sln;
char buf[CSTRBUFSIZ]; /* internal buffer */ /**
* Temproary buffer used to parse
*/
char buf[CSTRBUFSIZ];
} sexp_cstrwrap_t; } sexp_cstrwrap_t;
/*========*/ /*========*/
@ -742,6 +759,22 @@ extern "C" {
*/ */
sexp_t *read_one_sexp(sexp_iowrap_t *iow); sexp_t *read_one_sexp(sexp_iowrap_t *iow);
/**
* \ingroup IO
* create an wrapper structure around a c string buffer. A NULL return
* value indicates some problem occurred allocating the wrapper, so the
* user should check the value of sexp_errno for further information.
*/
sexp_cstrwrap_t *init_cstrwrap(const char *);
/**
* \ingroup IO
* destroy a wrapper structure.
*/
void destroy_cstrwrap(sexp_cstrwrap_t *);
sexp_t *get_one_sexp(sexp_cstrwrap_t *);
/** /**
* \ingroup parser * \ingroup parser
* wrapper around parser for compatibility. * wrapper around parser for compatibility.

2
lib/Makefile.am
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@ -14,7 +14,7 @@ lib_LTLIBRARIES = libsexpr.la
libsexpr_la_SOURCES = \ libsexpr_la_SOURCES = \
cstring.c event_temp.c faststack.c io.c \ cstring.c event_temp.c faststack.c io.c cswrap.c \
parser.c sexp.c sexp_memory.c sexp_ops.c sexp_vis.c parser.c sexp.c sexp_memory.c sexp_ops.c sexp_vis.c
libsexpr_la_LDFLAGS = libsexpr_la_LDFLAGS =

136
lib/cswrap.c Normal file
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@ -0,0 +1,136 @@
/**
@cond IGNORE
A wrapper functions to deal with a cstrings done as an io wrapper
Copyright (C) 2018 Alexander Vdolainen <avdolainen@zoho.com>
It is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation, either version 2.1 of the License, or
(at your option) any later version.
This is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.";
@endcond
**/
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sexpr/sexp.h>
sexp_cstrwrap_t *init_cstrwrap(const char *src)
{
sexp_cstrwrap_t *ow = NULL;
if(!src) {
sexp_errno = SEXP_ERR_NULLSTRING;
return NULL;
}
ow = (sexp_cstrwrap_t *)sexp_calloc(1, sizeof(sexp_cstrwrap_t));
if(!ow) {
sexp_errno = SEXP_ERR_MEMORY;
return NULL;
}
memset(ow, 0, sizeof(sexp_cstrwrap_t));
ow->seval = src;
ow->sln = strlen(src);
return ow;
}
void destroy_cstrwrap(sexp_cstrwrap_t *csw)
{
if(!csw) return;
if(csw->cc) destroy_continuation(csw->cc);
sexp_free(csw, sizeof(sexp_cstrwrap_t));
return;
}
static inline void __rnc_buf(sexp_cstrwrap_t *wr)
{
int sbuf_size = 0;
if(wr->sln - wr->cnt >= CSTRBUFSIZ) sbuf_size = CSTRBUFSIZ;
else sbuf_size = wr->sln - wr->cnt;
/*
* FIXME: is it ugly to copy?
* TODO: way to optimize is to modify a source string
* temproary - it's a way more worse
*/
memcpy(wr->buf, wr->seval + wr->cnt, sbuf_size);
wr->cnt += sbuf_size;
wr->rl = sbuf_size;
return;
}
sexp_t *get_one_sexp(sexp_cstrwrap_t *wr)
{
sexp_t *sx = NULL;
if(!wr) return NULL;
/* check for existing leftovers in continuation */
if(wr->cc && wr->cc->lastPos) {
wr->cc = cparse_sexp(wr->buf, wr->rl, wr->cc);
if(!wr->cc) return NULL; /* check the errno: it's set here */
if(wr->cc->last_sexp) {
sx = wr->cc->last_sexp;
wr->cc->last_sexp = NULL;
return sx;
}
wr->rl = 0;
}
if(wr->rl == 0) {
/* check for EOB */
if(wr->sln == wr->cnt) {
sexp_errno = SEXP_ERR_OK;
return NULL; /* we're done here */
}
__rnc_buf(wr);
}
wr->cc = cparse_sexp(wr->buf, wr->rl, wr->cc);
/* if expression more then buf size, read more */
while(wr->cc->last_sexp == NULL) {
if(wr->cc->error != SEXP_ERR_OK) {
sexp_errno = wr->cc->error;
return NULL;
}
/* check for EOB */
if(wr->sln == wr->cnt) {
sexp_errno = SEXP_ERR_IO_EMPTY;
return NULL; /* we're done here, s expression didn't finished */
}
__rnc_buf(wr);
wr->cc = cparse_sexp(wr->buf, wr->rl, wr->cc);
wr->rl = 0;
}
sx = wr->cc->last_sexp;
wr->cc->last_sexp = NULL;
return sx;
}