#!/bin/sh
# autopkgtest check: Build and run a very simple program against uchardet

set -e

# Require $AUTOPKGTEST_TMP for temporary build files
if [ -z "$AUTOPKGTEST_TMP" ]
then
	echo "Required envvar \"\$AUTOPKGTEST_TMP\" is not set" >&2
	exit 1
fi

cd "$AUTOPKGTEST_TMP"

if [ -n "${DEB_HOST_GNU_TYPE:-}" ]; then
    CROSS_COMPILE="$DEB_HOST_GNU_TYPE-"
else
    CROSS_COMPILE=
fi

cat <<EOF > detect.c
#include <stdio.h>
#include <uchardet.h>

// Runs uchardet on stdin and prints the result to stdout

int main(void)
{
    uchardet_t handle = uchardet_new();
    if (handle == NULL)
    {
        perror("uchardet_new");
        return 1;
    }

    // Read all data into uchardet
    for (;;)
    {
        char buf[4096];
        size_t len = fread(buf, 1, sizeof(buf), stdin);
        if (ferror(stdin))
        {
            perror("fread");
            uchardet_delete(handle);
            return 1;
        }

        if (uchardet_handle_data(handle, buf, len) != 0)
        {
            perror("uchardet_handle_data");
            return 1;
        }

        if (len < sizeof(buf))
            break;
    }

    // Get character set
    uchardet_data_end(handle);
    puts(uchardet_get_charset(handle));
    uchardet_delete(handle);
    return 0;
}
EOF

# Build program
${CROSS_COMPILE}gcc -Wall -Werror -I/usr/include/uchardet -o detect1 detect.c -luchardet
echo "build1: OK"
${CROSS_COMPILE}gcc -Wall -Werror -o detect2 detect.c $(${CROSS_COMPILE}pkg-config --cflags --libs uchardet)
echo "build2: OK"

# Run it on some ascii
[ $(echo 'hello world' | ./detect1) = 'ASCII' ]
[ $(echo 'hello world' | ./detect2) = 'ASCII' ]
echo "run1: OK"

# Run it on some chinese
[ $(echo '汉字漢字統一編碼萬國碼' | ./detect1) = 'UTF-8' ]
[ $(echo '汉字漢字統一編碼萬國碼' | ./detect2) = 'UTF-8' ]
echo "run2: OK"