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fc_botelho 2005-07-25 21:26:17 +00:00
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151
INSTALL
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@ -1,12 +1,3 @@
Installation Instructions
*************************
Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004 Free
Software Foundation, Inc.
This file is free documentation; the Free Software Foundation gives
unlimited permission to copy, distribute and modify it.
Basic Installation
==================
@ -17,27 +8,20 @@ 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
debugging `configure').
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 default to prevent problems with accidental use of stale
cache files.)
you can run in the future to recreate the current configuration, a file
`config.cache' that saves the results of its tests to speed up
reconfiguring, and a file `config.log' containing compiler output
(useful mainly for debugging `configure').
If you need to do unusual things to compile the package, please try
to figure out how `configure' could check whether to do them, and mail
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
some point `config.cache' contains results you don't want to keep, you
may remove or edit it.
be considered for the next release. If at some point `config.cache'
contains results you don't want to keep, you may remove or edit it.
The file `configure.ac' (or `configure.in') is used to create
`configure' by a program called `autoconf'. You only need
`configure.ac' if you want to change it or regenerate `configure' using
a newer version of `autoconf'.
The file `configure.in' is used to create `configure' by a program
called `autoconf'. You only need `configure.in' if you want to change
it or regenerate `configure' using a newer version of `autoconf'.
The simplest way to compile this package is:
@ -70,17 +54,15 @@ The simplest way to compile this package is:
Compilers and Options
=====================
Some systems require unusual options for compilation or linking that the
`configure' script does not know about. Run `./configure --help' for
details on some of the pertinent environment variables.
Some systems require unusual options for compilation or linking that
the `configure' script does not know about. You can give `configure'
initial values for variables by setting them in the environment. Using
a Bourne-compatible shell, you can do that on the command line like
this:
CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
You can give `configure' initial values for configuration parameters
by setting variables in the command line or in the environment. Here
is an example:
./configure CC=c89 CFLAGS=-O2 LIBS=-lposix
*Note Defining Variables::, for more details.
Or on systems that have the `env' program, you can do it like this:
env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure
Compiling For Multiple Architectures
====================================
@ -93,11 +75,11 @@ directory where you want the object files and executables to go and run
the `configure' script. `configure' automatically checks for the
source code in the directory that `configure' is in and in `..'.
If you have to use a `make' that does not support the `VPATH'
variable, you have 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.
If you have to use a `make' that does not supports the `VPATH'
variable, you have 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.
Installation Names
==================
@ -105,16 +87,16 @@ Installation Names
By default, `make install' will install the package's files in
`/usr/local/bin', `/usr/local/man', etc. You can specify an
installation prefix other than `/usr/local' by giving `configure' the
option `--prefix=PREFIX'.
option `--prefix=PATH'.
You can specify separate installation prefixes for
architecture-specific files and architecture-independent files. If you
give `configure' the option `--exec-prefix=PREFIX', the package will
use PREFIX as the prefix for installing programs and libraries.
give `configure' the option `--exec-prefix=PATH', the package will use
PATH as the prefix for installing programs and libraries.
Documentation and other data files will still use the regular prefix.
In addition, if you use an unusual directory layout you can give
options like `--bindir=DIR' to specify different values for particular
options like `--bindir=PATH' to specify different values for particular
kinds of files. Run `configure --help' for a list of the directories
you can set and what kinds of files go in them.
@ -140,80 +122,47 @@ you can use the `configure' options `--x-includes=DIR' and
Specifying the System Type
==========================
There may be some features `configure' cannot figure out 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 a
message saying it cannot guess the machine type, give it the
`--build=TYPE' option. TYPE can either be a short name for the system
type, such as `sun4', or a canonical name which has the form:
There may be some features `configure' can not figure out
automatically, but needs to determine by the type of host the package
will run on. Usually `configure' can figure that out, but if it prints
a message saying it can not guess the host type, give it the
`--host=TYPE' option. TYPE can either be a short name for the system
type, such as `sun4', or a canonical name with three fields:
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.
need to know the host type.
If you are _building_ compiler tools for cross-compiling, you should
If you are building compiler tools for cross-compiling, you can also
use the `--target=TYPE' option 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'.
produce code for and the `--build=TYPE' option to select the type of
system on which you are compiling the package.
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'.
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'.
`configure' looks for `PREFIX/share/config.site' if it exists, then
`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
Operation Controls
==================
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
will cause the specified gcc to be used as the C compiler (unless it is
overridden in the site shell script).
`configure' Invocation
======================
`configure' recognizes the following options to control how it operates.
`--help'
`-h'
Print a summary of the options to `configure', and exit.
`--version'
`-V'
Print the version of Autoconf used to generate the `configure'
script, and exit.
`configure' recognizes the following options to control how it
operates.
`--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.
Use and save the results of the tests in FILE instead of
`./config.cache'. Set FILE to `/dev/null' to disable caching, for
debugging `configure'.
`--config-cache'
`-C'
Alias for `--cache-file=config.cache'.
`--help'
Print a summary of the options to `configure', and exit.
`--quiet'
`--silent'
@ -226,6 +175,8 @@ overridden in the site shell script).
Look for the package's source code in directory DIR. Usually
`configure' can determine that directory automatically.
`configure' also accepts some other, not widely useful, options. Run
`configure --help' for more details.
`--version'
Print the version of Autoconf used to generate the `configure'
script, and exit.
`configure' also accepts some other, not widely useful, options.

2
Makefile.am
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@ -1,2 +1,2 @@
SUBDIRS = src tests
SUBDIRS = src tests examples
EXTRA_DIST = cmph.spec configure.ac

2
configure.ac
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@ -35,4 +35,4 @@ dnl Checks for library functions.
AC_CHECK_SPOON
dnl AC_OUTPUT(Makefile tests/Makefile samples/Makefile)
AC_OUTPUT(Makefile src/Makefile tests/Makefile)
AC_OUTPUT(Makefile src/Makefile tests/Makefile examples/Makefile)

80
examples/.deps/file_adapter_ex2.Po Normal file
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@ -0,0 +1,80 @@
file_adapter_ex2.o: file_adapter_ex2.c ../src/cmph.h \
/usr/include/stdlib.h /usr/include/features.h /usr/include/sys/cdefs.h \
/usr/include/gnu/stubs.h \
/usr/lib/gcc-lib/i486-linux/3.3.5/include/stddef.h \
/usr/include/sys/types.h /usr/include/bits/types.h \
/usr/include/bits/wordsize.h /usr/include/bits/typesizes.h \
/usr/include/time.h /usr/include/endian.h /usr/include/bits/endian.h \
/usr/include/sys/select.h /usr/include/bits/select.h \
/usr/include/bits/sigset.h /usr/include/bits/time.h \
/usr/include/sys/sysmacros.h /usr/include/bits/pthreadtypes.h \
/usr/include/bits/sched.h /usr/include/alloca.h /usr/include/stdio.h \
/usr/include/libio.h /usr/include/_G_config.h /usr/include/wchar.h \
/usr/include/bits/wchar.h /usr/include/gconv.h \
/usr/lib/gcc-lib/i486-linux/3.3.5/include/stdarg.h \
/usr/include/bits/stdio_lim.h /usr/include/bits/sys_errlist.h \
/usr/include/bits/stdio.h ../src/cmph_types.h
../src/cmph.h:
/usr/include/stdlib.h:
/usr/include/features.h:
/usr/include/sys/cdefs.h:
/usr/include/gnu/stubs.h:
/usr/lib/gcc-lib/i486-linux/3.3.5/include/stddef.h:
/usr/include/sys/types.h:
/usr/include/bits/types.h:
/usr/include/bits/wordsize.h:
/usr/include/bits/typesizes.h:
/usr/include/time.h:
/usr/include/endian.h:
/usr/include/bits/endian.h:
/usr/include/sys/select.h:
/usr/include/bits/select.h:
/usr/include/bits/sigset.h:
/usr/include/bits/time.h:
/usr/include/sys/sysmacros.h:
/usr/include/bits/pthreadtypes.h:
/usr/include/bits/sched.h:
/usr/include/alloca.h:
/usr/include/stdio.h:
/usr/include/libio.h:
/usr/include/_G_config.h:
/usr/include/wchar.h:
/usr/include/bits/wchar.h:
/usr/include/gconv.h:
/usr/lib/gcc-lib/i486-linux/3.3.5/include/stdarg.h:
/usr/include/bits/stdio_lim.h:
/usr/include/bits/sys_errlist.h:
/usr/include/bits/stdio.h:
../src/cmph_types.h:

80
examples/.deps/vector_adapter_ex1.Po Normal file
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@ -0,0 +1,80 @@
vector_adapter_ex1.o: vector_adapter_ex1.c ../src/cmph.h \
/usr/include/stdlib.h /usr/include/features.h /usr/include/sys/cdefs.h \
/usr/include/gnu/stubs.h \
/usr/lib/gcc-lib/i486-linux/3.3.5/include/stddef.h \
/usr/include/sys/types.h /usr/include/bits/types.h \
/usr/include/bits/wordsize.h /usr/include/bits/typesizes.h \
/usr/include/time.h /usr/include/endian.h /usr/include/bits/endian.h \
/usr/include/sys/select.h /usr/include/bits/select.h \
/usr/include/bits/sigset.h /usr/include/bits/time.h \
/usr/include/sys/sysmacros.h /usr/include/bits/pthreadtypes.h \
/usr/include/bits/sched.h /usr/include/alloca.h /usr/include/stdio.h \
/usr/include/libio.h /usr/include/_G_config.h /usr/include/wchar.h \
/usr/include/bits/wchar.h /usr/include/gconv.h \
/usr/lib/gcc-lib/i486-linux/3.3.5/include/stdarg.h \
/usr/include/bits/stdio_lim.h /usr/include/bits/sys_errlist.h \
/usr/include/bits/stdio.h ../src/cmph_types.h
../src/cmph.h:
/usr/include/stdlib.h:
/usr/include/features.h:
/usr/include/sys/cdefs.h:
/usr/include/gnu/stubs.h:
/usr/lib/gcc-lib/i486-linux/3.3.5/include/stddef.h:
/usr/include/sys/types.h:
/usr/include/bits/types.h:
/usr/include/bits/wordsize.h:
/usr/include/bits/typesizes.h:
/usr/include/time.h:
/usr/include/endian.h:
/usr/include/bits/endian.h:
/usr/include/sys/select.h:
/usr/include/bits/select.h:
/usr/include/bits/sigset.h:
/usr/include/bits/time.h:
/usr/include/sys/sysmacros.h:
/usr/include/bits/pthreadtypes.h:
/usr/include/bits/sched.h:
/usr/include/alloca.h:
/usr/include/stdio.h:
/usr/include/libio.h:
/usr/include/_G_config.h:
/usr/include/wchar.h:
/usr/include/bits/wchar.h:
/usr/include/gconv.h:
/usr/lib/gcc-lib/i486-linux/3.3.5/include/stdarg.h:
/usr/include/bits/stdio_lim.h:
/usr/include/bits/sys_errlist.h:
/usr/include/bits/stdio.h:
../src/cmph_types.h:

10
examples/Makefile.am Executable file
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@ -0,0 +1,10 @@
noinst_PROGRAMS = vector_adapter_ex1 file_adapter_ex2
INCLUDES = -I../src/
vector_adapter_ex1_LDADD = ../src/libcmph.la
vector_adapter_ex1_SOURCES = vector_adapter_ex1.c
file_adapter_ex2_LDADD = ../src/libcmph.la
file_adapter_ex2_SOURCES = file_adapter_ex2.c

32
examples/file_adapter_ex2.c Normal file
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@ -0,0 +1,32 @@
#include <cmph.h>
#include <stdio.h>
// Create minimal perfect hash function from in-disk keys using BMZ algorithm
int main(int argc, char **argv)
{
//Open file with newline separated list of keys
FILE * keys_fd = fopen("keys.txt", "r");
cmph_t *hash = NULL;
if (keys_fd == NULL)
{
fprintf(stderr, "File \"keys.txt\" not found\n");
exit(1);
}
// Source of keys
cmph_io_adapter_t *source = cmph_io_nlfile_adapter(keys_fd);
cmph_config_t *config = cmph_config_new(source);
cmph_config_set_algo(config, CMPH_BMZ);
hash = cmph_new(config);
cmph_config_destroy(config);
//Find key
const char *key = "jjjjjjjjjj";
unsigned int id = cmph_search(hash, key, strlen(key));
fprintf(stderr, "Id:%u\n", id);
//Destroy hash
cmph_destroy(hash);
free(source);
fclose(keys_fd);
return 0;
}

10
examples/keys.txt Normal file
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@ -0,0 +1,10 @@
aaaaaaaaaa
bbbbbbbbbb
cccccccccc
dddddddddd
eeeeeeeeee
ffffffffff
gggggggggg
hhhhhhhhhh
iiiiiiiiii
jjjjjjjjjj

26
examples/vector_adapter_ex1.c Executable file
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@ -0,0 +1,26 @@
#include <cmph.h>
// Create minimal perfect hash function from in-memory vector
int main(int argc, char **argv)
{
// Creating a filled vector
const char *vector[] = {"aaaaaaaaaa", "bbbbbbbbbb", "cccccccccc", "dddddddddd", "eeeeeeeeee",
"ffffffffff", "gggggggggg", "hhhhhhhhhh", "iiiiiiiiii", "jjjjjjjjjj"};
unsigned int nkeys = 10;
// Source of keys
cmph_io_adapter_t *source = cmph_io_vector_adapter(vector, nkeys);
//Create minimal perfect hash function using the default (chm) algorithm.
cmph_config_t *config = cmph_config_new(source);
cmph_t *hash = cmph_new(config);
cmph_config_destroy(config);
//Find key
const char *key = "jjjjjjjjjj";
unsigned int id = cmph_search(hash, key, strlen(key));
fprintf(stderr, "Id:%u\n", id);
//Destroy hash
cmph_destroy(hash);
free(source);
return 0;
}

29
src/cmph.c
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@ -12,6 +12,8 @@
const char *cmph_names[] = { "bmz", "chm", NULL }; /* included -- Fabiano */
static cmph_uint32 position; // access position when data is a vector
static int key_nlfile_read(void *data, char **key, cmph_uint32 *keylen)
{
FILE *fd = (FILE *)data;
@ -37,16 +39,34 @@ static int key_nlfile_read(void *data, char **key, cmph_uint32 *keylen)
return *keylen;
}
static int key_vector_read(void *data, char **key, cmph_uint32 *keylen)
{
char **keys = (char **)data;
if (keys + position == NULL) return -1;
*keylen = strlen(*(keys + position));
*key = (char *)malloc(*keylen);
strcpy(*key, *(keys + position));
position ++;
return *keylen;
}
static void key_nlfile_dispose(void *data, char *key, cmph_uint32 keylen)
{
free(key);
}
static void key_nlfile_rewind(void *data)
{
FILE *fd = (FILE *)data;
rewind(fd);
}
static void key_vector_rewind(void *data)
{
position = 0;
}
static cmph_uint32 count_nlfile_keys(FILE *fd)
{
cmph_uint32 count = 0;
@ -89,7 +109,14 @@ cmph_io_adapter_t *cmph_io_nlnkfile_adapter(FILE * keys_fd, cmph_uint32 nkeys)
cmph_io_adapter_t *cmph_io_vector_adapter(const char ** vector, cmph_uint32 nkeys)
{
return NULL;
cmph_io_adapter_t * key_source = malloc(sizeof(cmph_io_adapter_t));
assert(key_source);
key_source->data = (void *)vector;
key_source->nkeys = nkeys;
key_source->read = key_vector_read;
key_source->dispose = key_nlfile_dispose;
key_source->rewind = key_vector_rewind;
return key_source;
}
cmph_config_t *cmph_config_new(cmph_io_adapter_t *key_source)

2
src/cmph.h
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@ -27,7 +27,7 @@ typedef struct
/* please call free() in the created adapters */
cmph_io_adapter_t *cmph_io_nlfile_adapter(FILE * keys_fd);
cmph_io_adapter_t *cmph_io_nlnkfile_adapter(FILE * keys_fd, cmph_uint32 nkeys);
/*cmph_io_adapter_t *cmph_io_vector_adapter(const char ** vector, cmph_uint32 nkeys);*/
cmph_io_adapter_t *cmph_io_vector_adapter(const char ** vector, cmph_uint32 nkeys);
/** Hash configuration API **/
cmph_config_t *cmph_config_new(cmph_io_adapter_t *key_source);