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authorSergey Poznyakoff <gray@gnu.org.ua>2017-08-01 08:22:27 (GMT)
committer Sergey Poznyakoff <gray@gnu.org.ua>2017-08-01 08:36:20 (GMT)
commitd7399e572e334fb036c7f6b59400f5075147054c (patch) (side-by-side diff)
tree868c700aa625ab8d413a4191ec3c6cc61b72e5ad
downloadvmod-dict-d7399e572e334fb036c7f6b59400f5075147054c.tar.gz
vmod-dict-d7399e572e334fb036c7f6b59400f5075147054c.tar.bz2
Initial commit
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-rw-r--r--.gitignore28
-rw-r--r--.gitmodules3
-rw-r--r--AUTHORS1
-rw-r--r--COPYING674
-rw-r--r--Makefile.am23
-rw-r--r--NEWS35
-rw-r--r--README90
m---------acvmod0
-rw-r--r--configure.ac58
-rw-r--r--src/.gitignore4
-rw-r--r--src/Makefile.am56
-rw-r--r--src/vmod_dict.c352
-rw-r--r--src/vmod_dict.vcc37
-rw-r--r--tests/.gitignore6
-rw-r--r--tests/Makefile.am71
-rw-r--r--tests/atlocal.in7
-rw-r--r--tests/ci.at77
-rw-r--r--tests/cs.at77
-rw-r--r--tests/num.dict12
-rw-r--r--tests/testsuite.at21
20 files changed, 1632 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..506e185
--- a/dev/null
+++ b/.gitignore
@@ -0,0 +1,28 @@
+*.a
+*.la
+*.lo
+*.o
+*.tar.*
+*~
+.deps
+.emacs*
+.gdbinit
+.libs
+ABOUT-NLS
+ChangeLog
+INSTALL
+Makefile
+Makefile.in
+TAGS
+aclocal.m4
+autom4te.cache/
+build-aux
+config.h
+config.h.in
+config.log
+config.status
+configure
+core
+libtool
+m4
+stamp-h1
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..00ae21c
--- a/dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "acvmod"]
+ path = acvmod
+ url = git://git.gnu.org.ua/acvmod.git
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..c5a9530
--- a/dev/null
+++ b/AUTHORS
@@ -0,0 +1 @@
+Sergey Poznyakoff <gray@gnu.org>
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..94a9ed0
--- a/dev/null
+++ b/COPYING
@@ -0,0 +1,674 @@
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+ 13. Use with the GNU Affero General Public License.
+
+ Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work. The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+ 14. Revised Versions of this License.
+
+ The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+ Each version is given a distinguishing version number. If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+ If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+ Later license versions may give you additional or different
+permissions. However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+ 15. Disclaimer of Warranty.
+
+ THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+ 16. Limitation of Liability.
+
+ IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ <program> Copyright (C) <year> <name of author>
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..383f2dc
--- a/dev/null
+++ b/Makefile.am
@@ -0,0 +1,23 @@
+# This file is part of vmod_dict.
+# Copyright (C) 2017 Sergey Poznyakoff
+#
+# Vmod_dict is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# Vmod_dict 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with vmod_dict. If not, see <http://www.gnu.org/licenses/>.
+
+ACLOCAL_AMFLAGS = -I m4 -I acvmod
+
+SUBDIRS = src tests
+
+include acvmod/top.am
+
+
diff --git a/NEWS b/NEWS
new file mode 100644
index 0000000..434aaf9
--- a/dev/null
+++ b/NEWS
@@ -0,0 +1,35 @@
+vmod_dict -- history of user-visible changes. 2017-07-31
+Copyright (C) 2017 Sergey Poznyakoff
+See the end of file for copying conditions.
+
+Please send vmod_dict bug reports to <gray@gnu.org>
+
+
+Version 0.1
+
+Initial release
+
+=========================================================================
+Copyright information:
+
+Copyright (C) 2017 Sergey Poznyakoff
+
+ Permission is granted to anyone to make or distribute verbatim copies
+ of this document as received, in any medium, provided that the
+ copyright notice and this permission notice are preserved,
+ thus giving the recipient permission to redistribute in turn.
+
+ Permission is granted to distribute modified versions
+ of this document, or of portions of it,
+ under the above conditions, provided also that they
+ carry prominent notices stating who last changed them.
+
+Local variables:
+mode: outline
+paragraph-separate: "[ ]*$"
+eval: (add-hook 'write-file-hooks 'time-stamp)
+time-stamp-start: "changes. "
+time-stamp-format: "%:y-%02m-%02d"
+time-stamp-end: "\n"
+end:
+
diff --git a/README b/README
new file mode 100644
index 0000000..bf98aab
--- a/dev/null
+++ b/README
@@ -0,0 +1,90 @@
+Vmod_dict README
+Copyright (C) 2017 Sergey Poznyakoff
+See the end of file for copying conditions.
+
+* Introduction
+
+This file contains brief information about configuring, testing
+and using vmod_dict. It is *not* intended as a replacement
+for the documentation, and is provided as a brief reference only.
+For accessing complete documentation, please see the section
+'Documentation' below.
+
+* Overview
+
+This module adds to Varnish Cache the ability to look up values in
+a textual dictionary. A dictionary is a disk file containing on
+each line a keyword-value pair, separated by arbitrary amount of
+whitespace. Leading and trailing whitespace is ignored. Empty lines
+and comments (beginning with '#' as the first non-whitespace
+character) are allowed.
+
+The dictionary is loaded into a hash table using the dict.load
+function. Normally it is done in vcl_init:
+
+ import dict;
+
+ sub vcl_init {
+ dict.load("/var/lib/cache/input.dict", false, 0);
+ }
+
+The second argument (a boolean) specifies whether the keyword matching
+is case-insensitive (true) or case-sensitive (false). The 3rd argument
+gives the maximum allowed number of collisions in the loaded hash
+table. The module will adjust the load factor to meet this number.
+
+Once loaded, the value corresponding to a given key can be retrieved
+as follows:
+
+ set req.http.X-Value = dict.lookup("key");
+
+* Installation
+
+In order to compile the package you need to have installed
+varnishd and varnishapi package.
+
+Supposing that condition is met, run:
+
+ ./configure
+
+It should be able to automatically find the necessary components. In case
+it doesn't, tweak the configuration variables as necessary. The most
+important one is PKG_CONFIG_PATH, which contains a path (in the UNIX sense)
+where the .pc files are located. It should contain a directory where the
+'varnishapi.pc' file lives. Example usage:
+
+ ./configure PKG_CONFIG_PATH=/usr/local/varnish/lib/pkgconfig:$PKG_CONFIG_PATH
+
+Please read the file INSTALL for a detailed discussion of available variables
+and command line options.
+
+Once configured, do
+
+ make
+
+This will build the module. After this step you can optionally run
+'make test' to test the package.
+
+Finally, run the following command as root:
+
+ make install
+
+* Documentation
+
+The manual page vmod_dict(3) will be available after a successful
+install. To read it without actually installing the module, run
+`man src/vmod_dict.3'.
+
+An online copy of the documentation is available from
+http://ps.gnu.org.ua/software/vmod-dict.
+
+* Bug reporting
+
+Send bug reports and suggestions to <gray@gnu.org>
+
+
+Local Variables:
+mode: outline
+paragraph-separate: "[ ]*$"
+version-control: never
+End:
diff --git a/acvmod b/acvmod
new file mode 160000
+Subproject 06d9aba172e0247ba0d37fb46c6c008e1a5fc45
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..f26c1c2
--- a/dev/null
+++ b/configure.ac
@@ -0,0 +1,58 @@
+# This file is part of vmod_dict.
+# Copyright (C) 2017 Sergey Poznyakoff
+#
+# Vmod_dict is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# Vmod_dict is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with vmod_dict. If not, see <http://www.gnu.org/licenses/>.
+
+AC_PREREQ(2.69)
+AC_INIT([vmod-dict], [0.1], [gray@gnu.org])
+AC_CONFIG_AUX_DIR([build-aux])
+AC_CONFIG_MACRO_DIR([m4])
+AC_CONFIG_SRCDIR(src/vmod_dict.vcc)
+AM_CONFIG_HEADER(config.h)
+
+AC_CANONICAL_SYSTEM
+AC_LANG(C)
+
+AM_INIT_AUTOMAKE([1.14 gnu tar-ustar silent-rules])
+AM_SILENT_RULES([yes])
+
+AC_GNU_SOURCE
+AC_PROG_CC
+AC_PROG_CC_STDC
+if test "x$ac_cv_prog_cc_c99" = xno; then
+ AC_MSG_ERROR([could not find a C99 compatible compiler])
+fi
+AC_PROG_CPP
+
+AC_PROG_INSTALL
+AC_PROG_LIBTOOL
+AC_PROG_MAKE_SET
+
+# Checks for header files.
+AC_HEADER_STDC
+
+# Check for functions
+
+AM_VARNISHAPI([4.1])
+
+AC_CONFIG_TESTDIR(tests)
+AC_CONFIG_FILES([tests/Makefile tests/atlocal])
+AM_MISSING_PROG([AUTOM4TE], [autom4te])
+
+AC_CONFIG_FILES([
+ Makefile
+ src/Makefile
+])
+AC_OUTPUT
+
diff --git a/src/.gitignore b/src/.gitignore
new file mode 100644
index 0000000..1b6a341
--- a/dev/null
+++ b/src/.gitignore
@@ -0,0 +1,4 @@
+vcc_if.c
+vcc_if.h
+*.rst
+vmod_dict.3
diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..bff41f5
--- a/dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,56 @@
+# This file is part of vmod_dict.
+# Copyright (C) 2017 Sergey Poznyakoff
+#
+# Vmod_dict is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# Vmod_dict 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with vmod_dict. If not, see <http://www.gnu.org/licenses/>.
+
+AM_CPPFLAGS=\
+ $(VARNISHAPI_CFLAGS)\
+ -DLOCALSTATEDIR=\"$(localstatedir)\"
+
+vmoddir = $(VMODDIR)
+vmod_LTLIBRARIES = libvmod_dict.la
+
+libvmod_dict_la_LDFLAGS=-module -export-dynamic -avoid-version
+libvmod_dict_la_LIBADD=
+
+libvmod_dict_la_SOURCES = \
+ vmod_dict.c
+
+nodist_libvmod_dict_la_SOURCES = \
+ vcc_if.c vcc_if.h
+
+vmod_dict.lo: vcc_if.h
+
+CLEANFILES = vcc_if.c vcc_if.h *.rst
+
+vmodtoolargs = --strict
+vccfile = $(top_srcdir)/src/vmod_dict.vcc
+
+vcc_if.c vcc_if.h: $(vccfile)
+ $(AM_V_GEN)$(PYTHON) $(VARNISHAPI_VMODTOOL) $(vmodtoolargs) $(vccfile)
+
+EXTRA_DIST = \
+ vmod_dict.vcc\
+ vmod_dict.man.rst\
+ vmod_dict.rst
+
+dist_man_MANS=vmod_dict.3
+
+DISTCLEANFILES=vmod_dict.3
+
+vmod_dict.3: vmod_dict.man.rst
+ @$(abs_top_srcdir)/build-aux/missing rst2man.py \
+ vmod_dict.man.rst > vmod_dict.3
+
+
diff --git a/src/vmod_dict.c b/src/vmod_dict.c
new file mode 100644
index 0000000..03d116f
--- a/dev/null
+++ b/src/vmod_dict.c
@@ -0,0 +1,352 @@
+/* This file is part of vmod_dict.
+ Copyright (C) 2017 Sergey Poznyakoff
+
+ Vmod_dict is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3, or (at your option)
+ any later version.
+
+ Vmod_dict 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with vmod_dict. If not, see <http://www.gnu.org/licenses/>.
+*/
+#include <config.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <limits.h>
+#include <ctype.h>
+#include "vcl.h"
+#include "vrt.h"
+#include "vas.h"
+#include "cache/cache.h"
+#include "vcc_if.h"
+
+struct entry
+{
+ char *key;
+ char *val;
+ size_t hash;
+ struct entry *next;
+};
+
+static struct entry *ent_head, *ent_tail;
+static size_t ent_count;
+
+static size_t hash_size;
+static struct entry const **hash_table;
+static size_t max_hash_size = 8192;
+
+static int cs_coll[] = {
+ 0, 1, 2, 3, 4, 5, 6, 7,
+ 8, 9, 10, 11, 12, 13, 14, 15,
+ 16, 17, 18, 19, 20, 21, 22, 23,
+ 24, 25, 26, 27, 28, 29, 30, 31,
+ 32, 33, 34, 35, 36, 37, 38, 39,
+ 40, 41, 42, 43, 44, 45, 46, 47,
+ 48, 49, 50, 51, 52, 53, 54, 55,
+ 56, 57, 58, 59, 60, 61, 62, 63,
+ 64, 65, 66, 67, 68, 69, 70, 71,
+ 72, 73, 74, 75, 76, 77, 78, 79,
+ 80, 81, 82, 83, 84, 85, 86, 87,
+ 88, 89, 90, 91, 92, 93, 94, 95,
+ 96, 97, 98, 99, 100, 101, 102, 103,
+ 104, 105, 106, 107, 108, 109, 110, 111,
+ 112, 113, 114, 115, 116, 117, 118, 119,
+ 120, 121, 122, 123, 124, 125, 126, 127,
+ 128, 129, 130, 131, 132, 133, 134, 135,
+ 136, 137, 138, 139, 140, 141, 142, 143,
+ 144, 145, 146, 147, 148, 149, 150, 151,
+ 152, 153, 154, 155, 156, 157, 158, 159,
+ 160, 161, 162, 163, 164, 165, 166, 167,
+ 168, 169, 170, 171, 172, 173, 174, 175,
+ 176, 177, 178, 179, 180, 181, 182, 183,
+ 184, 185, 186, 187, 188, 189, 190, 191,
+ 192, 193, 194, 195, 196, 197, 198, 199,
+ 200, 201, 202, 203, 204, 205, 206, 207,
+ 208, 209, 210, 211, 212, 213, 214, 215,
+ 216, 217, 218, 219, 220, 221, 222, 223,
+ 224, 225, 226, 227, 228, 229, 230, 231,
+ 232, 233, 234, 235, 236, 237, 238, 239,
+ 240, 241, 242, 243, 244, 245, 246, 247,
+ 248, 249, 250, 251, 252, 253, 254, 255
+};
+static int ci_coll[] = {
+ 0, 1, 2, 3, 4, 5, 6, 7,
+ 8, 9, 10, 11, 12, 13, 14, 15,
+ 16, 17, 18, 19, 20, 21, 22, 23,
+ 24, 25, 26, 27, 28, 29, 30, 31,
+ 32, 33, 34, 35, 36, 37, 38, 39,
+ 40, 41, 42, 43, 44, 45, 46, 47,
+ 48, 49, 50, 51, 52, 53, 54, 55,
+ 56, 57, 58, 59, 60, 61, 62, 63,
+ 64, 97, 98, 99, 100, 101, 102, 103,
+ 104, 105, 106, 107, 108, 109, 110, 111,
+ 112, 113, 114, 115, 116, 117, 118, 119,
+ 120, 121, 122, 91, 92, 93, 94, 95,
+ 96, 97, 98, 99, 100, 101, 102, 103,
+ 104, 105, 106, 107, 108, 109, 110, 111,
+ 112, 113, 114, 115, 116, 117, 118, 119,
+ 120, 121, 122, 123, 124, 125, 126, 127,
+ 128, 129, 130, 131, 132, 133, 134, 135,
+ 136, 137, 138, 139, 140, 141, 142, 143,
+ 144, 145, 146, 147, 148, 149, 150, 151,
+ 152, 153, 154, 155, 156, 157, 158, 159,
+ 160, 161, 162, 163, 164, 165, 166, 167,
+ 168, 169, 170, 171, 172, 173, 174, 175,
+ 176, 177, 178, 179, 180, 181, 182, 183,
+ 184, 185, 186, 187, 188, 189, 190, 191,
+ 192, 193, 194, 195, 196, 197, 198, 199,
+ 200, 201, 202, 203, 204, 205, 206, 207,
+ 208, 209, 210, 211, 212, 213, 214, 215,
+ 216, 217, 218, 219, 220, 221, 222, 223,
+ 224, 225, 226, 227, 228, 229, 230, 231,
+ 232, 233, 234, 235, 236, 237, 238, 239,
+ 240, 241, 242, 243, 244, 245, 246, 247,
+ 248, 249, 250, 251, 252, 253, 254, 255
+};
+
+static int *collation = cs_coll;
+
+static inline int
+collate(char i)
+{
+ return collation[(unsigned char)i];
+}
+
+#define SIZE_T_MAX ((size_t)-1)
+
+static inline size_t
+rotl(size_t x, int n)
+{
+ return ((x << n) | (x >> ((CHAR_BIT * sizeof x) - n))) & SIZE_T_MAX;
+}
+
+static size_t
+string_hash(const char *str)
+{
+ size_t value = 0;
+ unsigned char ch;
+
+ while ((ch = *str++))
+ value = collate(ch) + rotl(value, 7);
+ return value;
+}
+
+static inline int
+chareq(int a, int b)
+{
+ return collate(a) == collate(b);
+}
+
+static int
+streq(const char *a, const char *b)
+{
+ while (*a) {
+ if (!(*b && chareq(*a, *b)))
+ return 0;
+ a++;
+ b++;
+ }
+ return *b ? 0 : 1;
+}
+
+static ssize_t
+my_getline(FILE *fp, char **pstr, size_t *psize)
+{
+ char *str;
+ size_t size;
+ size_t n;
+ int c;
+
+ if (!pstr || !psize) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ str = *pstr;
+ size = *psize;
+
+ if (!str || size == 0) {
+ /* Initial allocation */
+ size = 16;
+ str = malloc(size);
+ if (!str)
+ return -1;
+ *pstr = str;
+ *psize = size;
+ }
+
+ n = 0;
+ while ((c = getc(fp)) != EOF) {
+ if (n == size) {
+ char *p;
+ size_t sz;
+
+ if (size >= (size_t) -1 / 3 * 2) {
+ errno = ENOMEM;
+ return -1;
+ }
+ sz = size + (size + 1) / 2;
+ p = realloc(str, sz);
+ if (!p)
+ return -1;
+ *pstr = str = p;
+ *psize = size = sz;
+ }
+ str[n++] = c;
+ if (c == '\n')
+ break;
+ }
+
+ if (n == size) {
+ char *p = realloc(str, size + 1);
+ if (!p)
+ return -1;
+ *pstr = str = p;
+ *psize = ++size;
+ }
+ str[n] = 0;
+ return n;
+}
+
+static inline int
+isws(int c)
+{
+ return c == ' ' || c == '\t' || c == '\r' || c == '\n';
+}
+
+static void
+load_entries(char const *file)
+{
+ FILE *fp;
+ ssize_t n;
+ char *buf = NULL;
+ size_t size = 0;
+ unsigned line;
+ char *p, *val;
+ size_t l;
+ struct entry *ent;
+
+ fp = fopen(file, "r");
+ if (!fp) {
+ fprintf(stderr,
+ "lookup.init: can't load \"%s\": %s\n",
+ file, strerror(errno));
+ }
+ line = 0;
+ while ((n = my_getline(fp, &buf, &size)) > 0) {
+ line++;
+
+ while (n > 0 && isws(buf[n-1]))
+ n--;
+ buf[n] = 0;
+
+ for (p = buf; isws(*p); p++, n--)
+ ;
+ if (n == 0 || *p == '#')
+ continue;
+
+ l = strcspn(p, " \t");
+ p[l] = 0;
+
+ if (l == n) {
+ fprintf(stderr, "%s:%u: malformed line\n", file, line);
+ continue;
+ }
+
+ val = p + l + 1;
+ while (*val == ' ' || *val == '\t')
+ val++;
+
+ ent = malloc(sizeof *ent + l + strlen(val) + 2);
+ AN(ent);
+ ent->key = (char*)(ent + 1);
+ ent->val = ent->key + l + 1;
+ strcpy(ent->key, p);
+ strcpy(ent->val, val);
+ ent->hash = string_hash(ent->key);
+ ent->next = NULL;
+ if (ent_tail)
+ ent_tail->next = ent;
+ else
+ ent_head = ent;
+ ent_tail = ent;
+ ent_count++;
+ }
+ assert(n != -1);
+ fclose(fp);
+}
+
+VCL_VOID
+vmod_load(VRT_CTX, VCL_STRING file, VCL_BOOL ci, VCL_INT coll)
+{
+ struct entry *ent;
+ size_t next_size;
+
+ collation = ci ? ci_coll : cs_coll;
+
+ load_entries(file);
+
+ next_size = ent_count * 2;
+ if (ent_count < max_hash_size)
+ max_hash_size = next_size;
+ do {
+ size_t cn = 0;
+ size_t hs;
+
+ hash_size = next_size;
+ hs = sizeof(hash_table[0]) * hash_size;
+ hash_table = realloc(hash_table, hs);
+ AN(hash_table);
+ memset(hash_table, 0, hs);
+ for (ent = ent_head; ent; ent = ent->next) {
+ size_t h = ent->hash % hash_size;
+ size_t i = h;
+ size_t n = 0;
+
+ while (hash_table[i]) {
+ i = (i + 1) % hash_size;
+ assert(i != h);
+ n++;
+ }
+
+ if (n > cn) cn = n;
+ hash_table[i] = ent;
+ }
+
+ if (coll <= 0 || cn < coll)
+ break;
+
+ next_size *= 2;
+ } while (next_size < max_hash_size);
+}
+
+VCL_STRING
+vmod_lookup(VRT_CTX, VCL_STRING key)
+{
+ if (key) {
+ size_t i, h;
+
+ h = string_hash(key) % hash_size;
+ i = h;
+ while (hash_table[i]) {
+ if (streq(hash_table[i]->key, key)) {
+ char *s = WS_Copy(ctx->ws, hash_table[i]->val,
+ -1);
+ AN(s);
+ return s;
+ }
+ i = (i + 1) % hash_size;
+ if (i == h)
+ break;
+ }
+ }
+ return NULL;
+}
+
diff --git a/src/vmod_dict.vcc b/src/vmod_dict.vcc
new file mode 100644
index 0000000..76c4267
--- a/dev/null
+++ b/src/vmod_dict.vcc
@@ -0,0 +1,37 @@
+$Module dict 3 Dictionary look-up for Varnish Cache
+
+DESCRIPTION
+===========
+
+Provides simple key/value dictionary API. The dictionary is kept in
+a disk file. Each non-empty line in such a file is either a comment
+or a pair of keyword - value separated by one or more whitespace characters.
+Leading and trailing whitespace is discarded. Comments are introduced by a
+hash sign at the beginning of the line. Empty lines and comments are ignored.
+
+$Function VOID load(STRING file, BOOL ci, INT ncls)
+
+Description
+ Loads key/value dictionary from **file** into memory. The **ci**
+ parameter controls whether key lookups should be case-insensitive.
+ The **ncls** parameter, if positive, gives the maximum allowable length
+ of collision chain in the hash table. The module will adjust the hash
+ load factor to ensure thes number of collisions doesn't exceed this
+ value.
+
+ This function is normally called from **vcl_init**.
+
+$Function STRING lookup(STRING key)
+
+Description
+ Looks up the **key** in the table loaded by the **dict.load**.
+ Returns the value if found, or **NULL** otherwise.
+
+COPYRIGHT
+=========
+
+| Copyright (C) Sergey Poznyakoff
+| License GPLv3+: GNU GPL version 3 or later
+| <http://gnu.org/licenses/gpl.html>
+| This is free software: you are free to change and redistribute it.
+| There is NO WARRANTY, to the extent permitted by law.
diff --git a/tests/.gitignore b/tests/.gitignore
new file mode 100644
index 0000000..93f8f46
--- a/dev/null
+++ b/tests/.gitignore
@@ -0,0 +1,6 @@
+atconfig
+atlocal
+package.m4
+testsuite
+testsuite.dir
+testsuite.log
diff --git a/tests/Makefile.am b/tests/Makefile.am
new file mode 100644
index 0000000..d70517f
--- a/dev/null
+++ b/tests/Makefile.am
@@ -0,0 +1,71 @@
+# This file is part of vmod_dict.
+# Copyright (C) 2017 Sergey Poznyakoff
+#
+# Vmod_dict is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# Vmod_dict 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with vmod_dict. If not, see <http://www.gnu.org/licenses/>.
+
+EXTRA_DIST = $(TESTSUITE_AT) testsuite package.m4 num.dict
+DISTCLEANFILES = atconfig $(check_SCRIPTS)
+MAINTAINERCLEANFILES = Makefile.in $(TESTSUITE)
+CLEANFILES = .TESTINIT FAILURE
+
+## ------------ ##
+## package.m4. ##
+## ------------ ##
+
+$(srcdir)/package.m4: $(top_srcdir)/configure.ac
+ $(AM_V_GEN){ \
+ echo '# Signature of the current package.'; \
+ echo 'm4_define([AT_PACKAGE_NAME], [@PACKAGE_NAME@])'; \
+ echo 'm4_define([AT_PACKAGE_TARNAME], [@PACKAGE_TARNAME@])'; \
+ echo 'm4_define([AT_PACKAGE_VERSION], [@PACKAGE_VERSION@])'; \
+ echo 'm4_define([AT_PACKAGE_STRING], [@PACKAGE_STRING@])'; \
+ echo 'm4_define([AT_PACKAGE_BUGREPORT], [@PACKAGE_BUGREPORT@])'; \
+ } >$(srcdir)/package.m4
+
+#
+
+## ------------ ##
+## Test suite. ##
+## ------------ ##
+
+TESTSUITE_AT = \
+ testsuite.at\
+ ci.at\
+ cs.at
+
+TESTSUITE = $(srcdir)/testsuite
+M4=m4
+
+AUTOTEST = $(AUTOM4TE) --language=autotest
+$(TESTSUITE): package.m4 $(TESTSUITE_AT)
+ $(AM_V_GEN)$(AUTOTEST) -I $(srcdir) testsuite.at -o $@.tmp
+ $(AM_V_at)mv $@.tmp $@
+
+atconfig: $(top_builddir)/config.status
+ @cd $(top_builddir) && ./config.status tests/$@
+
+clean-local:
+ @test ! -f $(TESTSUITE) || $(SHELL) $(TESTSUITE) --clean
+
+check-local: atconfig atlocal $(TESTSUITE)
+ @$(SHELL) $(TESTSUITE)
+
+# Run the test suite on the *installed* tree.
+#installcheck-local:
+# $(SHELL) $(TESTSUITE) AUTOTEST_PATH=$(exec_prefix)/bin
+
+
+
+
+
diff --git a/tests/atlocal.in b/tests/atlocal.in
new file mode 100644
index 0000000..142b9ed
--- a/dev/null
+++ b/tests/atlocal.in
@@ -0,0 +1,7 @@
+# @configure_input@ -*- shell-script -*-
+# Configurable variable values for vmod_dict test suite.
+# Copyright (C) 2017 Sergey Poznyakoff
+
+PATH=@abs_builddir@:@abs_top_builddir@/src:@abs_top_srcdir@/build-aux:$top_srcdir:$srcdir:$PATH
+VARNISHTEST=@VARNISHTEST@
+VARNISHD=@VARNISHD@
diff --git a/tests/ci.at b/tests/ci.at
new file mode 100644
index 0000000..6554e53
--- a/dev/null
+++ b/tests/ci.at
@@ -0,0 +1,77 @@
+AT_SETUP([case-insensitive])
+AT_KEYWORDS([case-insensitive])
+AT_VARNISHTEST([dict],[
+ sub vcl_init {
+ dict.load("\${vmod_topsrc}/tests/num.dict", true, 0);
+ }
+ sub vcl_recv {
+ set req.http.X-result = dict.lookup(regsub(req.url, "^/(.*)", "\1"));
+ return (hash);
+ }
+ sub vcl_deliver {
+ set resp.http.X-result = req.http.X-result;
+ }
+],
+[ txreq -url "/oNe"
+ rxresp
+ expect resp.http.X-result == "en"
+ txreq -url "/TWO"
+ rxresp
+ expect resp.http.X-result == "to"
+ txreq -url "/THREE"
+ rxresp
+ expect resp.http.X-result == "tre"
+ txreq -url "/FOUR"
+ rxresp
+ expect resp.http.X-result == "fire"
+ txreq -url "/FIVE"
+ rxresp
+ expect resp.http.X-result == "fem"
+ txreq -url "/SIX"
+ rxresp
+ expect resp.http.X-result == "seks"
+ txreq -url "/SEVEN"
+ rxresp
+ expect resp.http.X-result == "sju"
+ txreq -url "/EIGHT"
+ rxresp
+ expect resp.http.X-result == "aatte"
+ txreq -url "/nINe"
+ rxresp
+ expect resp.http.X-result == "ni"
+ txreq -url "/Ten"
+ rxresp
+ expect resp.http.X-result == "ti"
+ txreq -url "/ELeVEN"
+ rxresp
+ expect resp.http.X-result == "elleve"
+ txreq -url "/twELve"
+ rxresp
+ expect resp.http.X-result == "tolv"
+],
+[ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+])
+AT_CLEANUP
diff --git a/tests/cs.at b/tests/cs.at
new file mode 100644
index 0000000..f847773
--- a/dev/null
+++ b/tests/cs.at
@@ -0,0 +1,77 @@
+AT_SETUP([case-sensitive])
+AT_KEYWORDS([case-sensitive])
+AT_VARNISHTEST([dict],[
+ sub vcl_init {
+ dict.load("\${vmod_topsrc}/tests/num.dict", false, 0);
+ }
+ sub vcl_recv {
+ set req.http.X-result = dict.lookup(regsub(req.url, "^/(.*)", "\1"));
+ return (hash);
+ }
+ sub vcl_deliver {
+ set resp.http.X-result = req.http.X-result;
+ }
+],
+[ txreq -url "/one"
+ rxresp
+ expect resp.http.X-result == "en"
+ txreq -url "/two"
+ rxresp
+ expect resp.http.X-result == "to"
+ txreq -url "/three"
+ rxresp
+ expect resp.http.X-result == "tre"
+ txreq -url "/four"
+ rxresp
+ expect resp.http.X-result == "fire"
+ txreq -url "/five"
+ rxresp
+ expect resp.http.X-result == "fem"
+ txreq -url "/six"
+ rxresp
+ expect resp.http.X-result == "seks"
+ txreq -url "/seven"
+ rxresp
+ expect resp.http.X-result == "sju"
+ txreq -url "/eight"
+ rxresp
+ expect resp.http.X-result == "aatte"
+ txreq -url "/nine"
+ rxresp
+ expect resp.http.X-result == "ni"
+ txreq -url "/ten"
+ rxresp
+ expect resp.http.X-result == "ti"
+ txreq -url "/eleven"
+ rxresp
+ expect resp.http.X-result == "elleve"
+ txreq -url "/twelve"
+ rxresp
+ expect resp.http.X-result == "tolv"
+],
+[ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+ rxreq
+ txresp
+])
+AT_CLEANUP
diff --git a/tests/num.dict b/tests/num.dict
new file mode 100644
index 0000000..c199908
--- a/dev/null
+++ b/tests/num.dict
@@ -0,0 +1,12 @@
+one en
+two to
+three tre
+four fire
+five fem
+six seks
+seven sju
+eight aatte
+nine ni
+ten ti
+eleven elleve
+twelve tolv
diff --git a/tests/testsuite.at b/tests/testsuite.at
new file mode 100644
index 0000000..be04b56
--- a/dev/null
+++ b/tests/testsuite.at
@@ -0,0 +1,21 @@
+# This file is part of vmod_dict.
+# Copyright (C) 2017 Sergey Poznyakoff
+#
+# Vmod_dict is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# Vmod_dict 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with vmod_dict. If not, see <http://www.gnu.org/licenses/>.
+
+m4_include([../acvmod/testsuite.inc])
+AT_INIT
+m4_include([cs.at])
+m4_include([ci.at])
+

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