# versioning_script.at -- test the libtool versioning script: libtool-next-version         -*- Autotest -*-
#
#   Copyright (C) 2025-2026 Free Software Foundation, Inc.
#
#   This file is part of GNU Libtool.
#
# GNU Libtool 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 2 of
# the License, or (at your option) any later version.
#
# GNU Libtool 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 GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
####
####

AT_SETUP([Test libtool-next-version script])
AT_KEYWORDS([libtool])
# Testing the script. Let's create an old library and a new library.

eval `$LIBTOOL --config | $EGREP '^(libname_spec|libext)='`

mkdir -p libexample/src
mkdir -p new_libexample/src

mkdir libexample/m4
mkdir new_libexample/m4

touch libexample/src/Makefile.am new_libexample/src/Makefile.am

AT_DATA([libexample/Makefile.am], [[
# Makefile.am
ACLOCAL_AMFLAGS = -I m4
SUBDIRS = src

# Enable subdir-objects option
AM_CFLAGS = -I$(srcdir)/src

# Enable subdir-objects
AUTOMAKE_OPTIONS = subdir-objects

lib_LTLIBRARIES = libexample.la

libexample_la_SOURCES = src/example.c src/example.h
]])

AT_DATA([new_libexample/Makefile.am], [[
# Makefile.am
ACLOCAL_AMFLAGS = -I m4
SUBDIRS = src

# Enable subdir-objects option
AM_CFLAGS = -I$(srcdir)/src

# Enable subdir-objects
AUTOMAKE_OPTIONS = subdir-objects

lib_LTLIBRARIES = libexample.la

libexample_la_SOURCES = src/example.c src/example.h
]])

AT_DATA([libexample/configure.ac], [[
# configure.ac
AC_INIT([libexample], [1.0])
AM_INIT_AUTOMAKE([-Wall -Werror foreign])

# Add the macro directory
AC_CONFIG_MACRO_DIRS([m4])

# Initialize the archiver
AM_PROG_AR

AC_PROG_CC

# Set Libtool versioning
LT_INIT

AC_CONFIG_SRCDIR([src/example.c])
AC_CONFIG_HEADERS([config.h])

AC_CONFIG_FILES([Makefile src/Makefile])
AC_OUTPUT
]])

AT_DATA([new_libexample/configure.ac], [[
# configure.ac
AC_INIT([libexample], [1.0])
AM_INIT_AUTOMAKE([-Wall -Werror foreign])

# Add the macro directory
AC_CONFIG_MACRO_DIRS([m4])

# Initialize the archiver
AM_PROG_AR

AC_PROG_CC

# Set Libtool versioning
LT_INIT
AC_CONFIG_SRCDIR([src/example.c])
AC_CONFIG_HEADERS([config.h])

AC_CONFIG_FILES([Makefile src/Makefile])
AC_OUTPUT
]])

AT_DATA([libexample/src/example.c], [[
// src/example.c
#include <stdio.h>

void example_function() {
    printf("Hello from example_function!\n");
}
]])

AT_DATA([libexample/src/example.h], [[
// src/example.h
#ifndef EXAMPLE_H
#define EXAMPLE_H

void example_function();

#endif // EXAMPLE_H
]])


AT_DATA([new_libexample/src/example.c], [[
// src/example.c
#include <stdio.h>

void example_function() {
    printf("Hello from example_function!\n");
}

void new_function() {
	printf("new\n");
}
]])

AT_DATA([new_libexample/src/example.h], [[
// src/example.h
//
#ifndef EXAMPLE_H
#define EXAMPLE_H

void example_function();
void new_function();
#endif // EXAMPLE_H
]])

echo "Running autoreconf on libexample directory, the original library"
(
    cd libexample
    LT_AT_LIBTOOLIZE([--copy --ltdl])
    LT_AT_AUTORECONF([-ivf])
    LT_AT_CONFIGURE([], [configure])
    LT_AT_MAKE([])
)

echo "Running autoreconf on new_libexample directory, the updated library"
(
    cd new_libexample
    LT_AT_LIBTOOLIZE([--copy --ltdl])
    LT_AT_AUTORECONF([-ivf])
    LT_AT_CONFIGURE([], [configure])
    LT_AT_MAKE([])
)

remove_whitespace() {
    input_string=$1
    echo "$input_string" | tr -d '[[:space:]]'
}

# Check if the version script exists
if test -f "$_lt_pkgdatadir/libtool-next-version"; then
    script_path=$_lt_pkgdatadir/libtool-next-version
elif test -f "$abs_builddir/../libtool-next-version"; then
    script_path=$abs_builddir/../libtool-next-version
elif test -f "../../../libtool-next-version"; then
    script_path=../../../libtool-next-version
else
    echo "Couldn't find script"
fi

AT_CHECK([test -f "$script_path"])

name=example
eval libname=\"$libname_spec\"

# Set version to 1.0.0. Select the default options for determining the new version of the library.
(echo "1"; echo "0"; echo "0"; echo yes; echo no; echo no; echo yes) \
    | $script_path libexample/.libs/$libname.$libext new_libexample/.libs/$libname.$libext > actual

tr -d '[[:space:]]' < actual > temp && mv temp actual

# Verify --help works
$script_path --help > actual
tr -d '[[:space:]]' < actual > temp && mv temp actual

expected="Options: --help print this help and exit --version print version information and exit"
expected=$(remove_whitespace "$expected")
echo "expected is $expected"
AT_CHECK([$GREP -i $expected actual],
         [0], [ignore])

# Verify --version works
$script_path --version > actual
tr -d '[[:space:]]' < actual > temp && mv temp actual
expected="libtool-next-version (GNU libtool)"
expected=$(remove_whitespace "$expected")
echo "expected is $expected"
AT_CHECK([$GREP -i $expected actual],
         [0], [ignore])

# Try each possible answer to the version script.

# Case 1: Indicate to the script that there has not been any code change.
(echo "1"; echo "0"; echo "0"; echo no) \
    | $script_path libexample/.libs/$libname.$libext new_libexample/.libs/$libname.$libext > actual

tr -d '[[:space:]]' < actual > temp && mv temp actual
expected_version="This is the libtool version of the library for the new release: LTV_CURRENT=1 LTV_REVISION=0 LTV_AGE=0"
expected_version=$(echo "$expected_version" | tr -d '[[:space:]]')
AT_CHECK([$GREP -i $expected_version actual],
         [0], [ignore])

# Case 2: There is a code change. An interface has been removed.
(echo "1"; echo "0"; echo "0"; echo yes; echo yes) \
    | $script_path libexample/.libs/$libname.$libext new_libexample/.libs/$libname.$libext > actual

tr -d '[[:space:]]' < actual > temp && mv temp actual
expected_version="This is the libtool version of the library for the new release: LTV_CURRENT=2 LTV_REVISION=0 LTV_AGE=0"
expected_version=$(echo "$expected_version" | tr -d '[[:space:]]')
AT_CHECK([$GREP -i $expected_version actual],
         [0], [ignore])

# Case 3: There is a code change. No interfaces have been removed. An interface has changed.
(echo "1"; echo "0"; echo "0"; echo yes; echo no; echo yes) \
    | $script_path libexample/.libs/$libname.$libext new_libexample/.libs/$libname.$libext> actual

tr -d '[[:space:]]' < actual > temp && mv temp actual
expected_version="This is the libtool version of the library for the new release: LTV_CURRENT=2 LTV_REVISION=0 LTV_AGE=0"
expected_version=$(echo "$expected_version" | tr -d '[[:space:]]')
AT_CHECK([$GREP -i $expected_version actual],
         [0], [ignore])

 # Case 4: There is a code change. No interfaces have been removed. No interfaces have changed. An interface has been added.
(echo "1"; echo "0"; echo "0"; echo yes; echo no; echo no; echo yes) \
    | $script_path libexample/.libs/$libname.$libext new_libexample/.libs/$libname.$libext > actual

tr -d '[[:space:]]' < actual > temp && mv temp actual
expected_version="This is the libtool version of the library for the new release: LTV_CURRENT=2 LTV_REVISION=0 LTV_AGE=1"
expected_version=$(echo "$expected_version" | tr -d '[[:space:]]')
AT_CHECK([$GREP -i $expected_version actual],
         [0], [ignore])

# Case 5: There is a code change. No interfaces have been removed. No interfaces have changed. No interfaces have been added.
(echo "1"; echo "0"; echo "0"; echo yes; echo no; echo no; echo no; echo yes) \
    | $script_path libexample/.libs/$libname.$libext new_libexample/.libs/$libname.$libext > actual

tr -d '[[:space:]]' < actual > temp && mv temp actual
expected_version="This is the libtool version of the library for the new release: LTV_CURRENT=1 LTV_REVISION=1 LTV_AGE=0"
expected_version=$(echo "$expected_version" | tr -d '[[:space:]]')
AT_CHECK([$GREP -i $expected_version actual],
         [0], [ignore])

case $host_os in
mingw* | windows* | cygwin* | solaris* | linux-musl*)
    echo "Version script not testing code change differences on Solaris, Alpine Linux, and Windows platforms".
  ;;
*)
    echo "Version script testing code change differences on $host_os"
    # Test on differences from the old library to the new library
    (echo "1"; echo "0"; echo "0"; echo yes; echo no; echo no; echo yes) \
    | $script_path libexample/.libs/$libname.$libext new_libexample/.libs/$libname.$libext > actual

    tr -d '[[:space:]]' < actual > temp && mv temp actual

    # If the symbol list has changed and something has been added, roll the CURRENT and AGE version.
    # That is, the new version is 2.0.1
    expected_version="This is the libtool version of the library for the new release: LTV_CURRENT=2 LTV_REVISION=0 LTV_AGE=1"
    expected_version=$(echo "$expected_version" | tr -d '[[:space:]]')
    AT_CHECK([$GREP -i $expected_version actual],
            [0], [ignore])

    # Verify the symbol list has changed and is a new_function
    expected_1="The symbol list changed. Here are the differences:"
    expected_2=new_function
    expected_1=$(remove_whitespace "$expected_1")
    expected_2=$(remove_whitespace "$expected_2")
    echo "expected is $expected_1 && $expected_2"
    AT_CHECK([$GREP -i $expected_1 actual && $GREP -i $expected_2 actual],
            [0], [ignore])
esac


AT_CLEANUP