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fc_botelho 2005-07-25 21:26:17 +00:00
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INSTALL
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@ -1,43 +1,27 @@
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 Basic Installation
================== ==================
These are generic installation instructions. These are generic installation instructions.
The `configure' shell script attempts to guess correct values for The `configure' shell script attempts to guess correct values for
various system-dependent variables used during compilation. It uses various system-dependent variables used during compilation. It uses
those values to create a `Makefile' in each directory of the package. those values to create a `Makefile' in each directory of the package.
It may also create one or more `.h' files containing system-dependent It may also create one or more `.h' files containing system-dependent
definitions. Finally, it creates a shell script `config.status' that definitions. Finally, it creates a shell script `config.status' that
you can run in the future to recreate the current configuration, and a you can run in the future to recreate the current configuration, a file
file `config.log' containing compiler output (useful mainly for `config.cache' that saves the results of its tests to speed up
debugging `configure'). reconfiguring, 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.)
If you need to do unusual things to compile the package, please try 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 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 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 be considered for the next release. If at some point `config.cache'
some point `config.cache' contains results you don't want to keep, you contains results you don't want to keep, you may remove or edit it.
may remove or edit it.
The file `configure.ac' (or `configure.in') is used to create The file `configure.in' is used to create `configure' by a program
`configure' by a program called `autoconf'. You only need called `autoconf'. You only need `configure.in' if you want to change
`configure.ac' if you want to change it or regenerate `configure' using it or regenerate `configure' using a newer version of `autoconf'.
a newer version of `autoconf'.
The simplest way to compile this package is: The simplest way to compile this package is:
@ -70,22 +54,20 @@ The simplest way to compile this package is:
Compilers and Options Compilers and Options
===================== =====================
Some systems require unusual options for compilation or linking that the Some systems require unusual options for compilation or linking that
`configure' script does not know about. Run `./configure --help' for the `configure' script does not know about. You can give `configure'
details on some of the pertinent environment variables. 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 Or on systems that have the `env' program, you can do it like this:
by setting variables in the command line or in the environment. Here env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure
is an example:
./configure CC=c89 CFLAGS=-O2 LIBS=-lposix
*Note Defining Variables::, for more details.
Compiling For Multiple Architectures Compiling For Multiple Architectures
==================================== ====================================
You can compile the package for more than one kind of computer at the 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 same time, by placing the object files for each architecture in their
own directory. To do this, you must use a version of `make' that own directory. To do this, you must use a version of `make' that
supports the `VPATH' variable, such as GNU `make'. `cd' to the supports the `VPATH' variable, such as GNU `make'. `cd' to the
@ -93,28 +75,28 @@ directory where you want the object files and executables to go and run
the `configure' script. `configure' automatically checks for the the `configure' script. `configure' automatically checks for the
source code in the directory that `configure' is in and in `..'. source code in the directory that `configure' is in and in `..'.
If you have to use a `make' that does not support the `VPATH' 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 variable, you have to compile the package for one architecture at a time
time in the source code directory. After you have installed the in the source code directory. After you have installed the package for
package for one architecture, use `make distclean' before reconfiguring one architecture, use `make distclean' before reconfiguring for another
for another architecture. architecture.
Installation Names Installation Names
================== ==================
By default, `make install' will install the package's files in By default, `make install' will install the package's files in
`/usr/local/bin', `/usr/local/man', etc. You can specify an `/usr/local/bin', `/usr/local/man', etc. You can specify an
installation prefix other than `/usr/local' by giving `configure' the installation prefix other than `/usr/local' by giving `configure' the
option `--prefix=PREFIX'. option `--prefix=PATH'.
You can specify separate installation prefixes for You can specify separate installation prefixes for
architecture-specific files and architecture-independent files. If you architecture-specific files and architecture-independent files. If you
give `configure' the option `--exec-prefix=PREFIX', the package will give `configure' the option `--exec-prefix=PATH', the package will use
use PREFIX as the prefix for installing programs and libraries. PATH as the prefix for installing programs and libraries.
Documentation and other data files will still use the regular prefix. Documentation and other data files will still use the regular prefix.
In addition, if you use an unusual directory layout you can give 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 kinds of files. Run `configure --help' for a list of the directories
you can set and what kinds of files go in them. you can set and what kinds of files go in them.
@ -125,7 +107,7 @@ option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
Optional Features Optional Features
================= =================
Some packages pay attention to `--enable-FEATURE' options to Some packages pay attention to `--enable-FEATURE' options to
`configure', where FEATURE indicates an optional part of the package. `configure', where FEATURE indicates an optional part of the package.
They may also pay attention to `--with-PACKAGE' options, where PACKAGE They may also pay attention to `--with-PACKAGE' options, where PACKAGE
is something like `gnu-as' or `x' (for the X Window System). The is something like `gnu-as' or `x' (for the X Window System). The
@ -140,80 +122,47 @@ you can use the `configure' options `--x-includes=DIR' and
Specifying the System Type Specifying the System Type
========================== ==========================
There may be some features `configure' cannot figure out automatically, There may be some features `configure' can not figure out
but needs to determine by the type of machine the package will run on. automatically, but needs to determine by the type of host the package
Usually, assuming the package is built to be run on the _same_ will run on. Usually `configure' can figure that out, but if it prints
architectures, `configure' can figure that out, but if it prints a a message saying it can not guess the host type, give it the
message saying it cannot guess the machine type, give it the `--host=TYPE' option. TYPE can either be a short name for the system
`--build=TYPE' option. TYPE can either be a short name for the system type, such as `sun4', or a canonical name with three fields:
type, such as `sun4', or a canonical name which has the form:
CPU-COMPANY-SYSTEM CPU-COMPANY-SYSTEM
where SYSTEM can have one of these forms: See the file `config.sub' for the possible values of each field. If
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 `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 use the `--target=TYPE' option to select the type of system they will
produce code for. produce code for and the `--build=TYPE' option to select the type of
system on which you are compiling the package.
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 Sharing Defaults
================ ================
If you want to set default values for `configure' scripts to share, you If you want to set default values for `configure' scripts to share,
can create a site shell script called `config.site' that gives default you can create a site shell script called `config.site' that gives
values for variables like `CC', `cache_file', and `prefix'. default values for variables like `CC', `cache_file', and `prefix'.
`configure' looks for `PREFIX/share/config.site' if it exists, then `configure' looks for `PREFIX/share/config.site' if it exists, then
`PREFIX/etc/config.site' if it exists. Or, you can set the `PREFIX/etc/config.site' if it exists. Or, you can set the
`CONFIG_SITE' environment variable to the location of the site script. `CONFIG_SITE' environment variable to the location of the site script.
A warning: not all `configure' scripts look for a 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 `configure' recognizes the following options to control how it
environment passed to `configure'. However, some packages may run operates.
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.
`--cache-file=FILE' `--cache-file=FILE'
Enable the cache: use and save the results of the tests in FILE, Use and save the results of the tests in FILE instead of
traditionally `config.cache'. FILE defaults to `/dev/null' to `./config.cache'. Set FILE to `/dev/null' to disable caching, for
disable caching. debugging `configure'.
`--config-cache' `--help'
`-C' Print a summary of the options to `configure', and exit.
Alias for `--cache-file=config.cache'.
`--quiet' `--quiet'
`--silent' `--silent'
@ -226,6 +175,8 @@ overridden in the site shell script).
Look for the package's source code in directory DIR. Usually Look for the package's source code in directory DIR. Usually
`configure' can determine that directory automatically. `configure' can determine that directory automatically.
`configure' also accepts some other, not widely useful, options. Run `--version'
`configure --help' for more details. 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 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 AC_CHECK_SPOON
dnl AC_OUTPUT(Makefile tests/Makefile samples/Makefile) 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 */ 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) static int key_nlfile_read(void *data, char **key, cmph_uint32 *keylen)
{ {
FILE *fd = (FILE *)data; FILE *fd = (FILE *)data;
@ -37,16 +39,34 @@ static int key_nlfile_read(void *data, char **key, cmph_uint32 *keylen)
return *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) static void key_nlfile_dispose(void *data, char *key, cmph_uint32 keylen)
{ {
free(key); free(key);
} }
static void key_nlfile_rewind(void *data) static void key_nlfile_rewind(void *data)
{ {
FILE *fd = (FILE *)data; FILE *fd = (FILE *)data;
rewind(fd); rewind(fd);
} }
static void key_vector_rewind(void *data)
{
position = 0;
}
static cmph_uint32 count_nlfile_keys(FILE *fd) static cmph_uint32 count_nlfile_keys(FILE *fd)
{ {
cmph_uint32 count = 0; 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) 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) 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 */ /* please call free() in the created adapters */
cmph_io_adapter_t *cmph_io_nlfile_adapter(FILE * keys_fd); 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_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 **/ /** Hash configuration API **/
cmph_config_t *cmph_config_new(cmph_io_adapter_t *key_source); cmph_config_t *cmph_config_new(cmph_io_adapter_t *key_source);