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%%问题已解决，下面的代码按预期运行%%

我正在尝试在 Bash 中编写一个 SVN 预提交钩子，用于测试传入文件的 UTF-8 编码。经过大量字符串处理以获取传入文件的路径并忽略目录/图片/已删除文件等，我使用“svnlook cat”读取传入文件并将其通过管道传输到“iconv -f UTF-8”。在此之后，我使用 ${PIPESTATUS[1]} 读取了 iconv 操作的退出状态。

我的代码如下所示：

REPOS="$1"
TXN="$2"

SVNLOOK=/usr/bin/svnlook
ICONV=/usr/bin/iconv

# The file endings to ignore when checking for UTF-8:
IGNORED_ENDINGS=( png jar )

# Prepairing to set the IFS (Internal Field Separator) so "for CHANGE in ..." will iterate
# over lines instead of words
OIFS="${IFS}"
NIFS=$'\n'

# Make sure that all files to be committed are encoded in UTF-8
IFS="${NIFS}"

for CHANGE in $($SVNLOOK changed -t "$TXN" "$REPOS"); do
    IFS="${OIFS}"
    # Skip change if first character is "D" (we dont care about checking deleted files)
    if [ "${CHANGE:0:1}" == "D" ]; then
        continue
    fi

    # Skip change if it is a directory (directories don't have encoding)
    if [ "${CHANGE:(-1)}" == "/" ]; then
        continue
    fi

    # Extract file repository path (remove first 4 characters)
    FILEPATH=${CHANGE:4:(${#CHANGE}-4)}

    # Ignore files that starts with "." like ".classpath"
    IFS="//" # Change seperator to "/" so we can find the file in the file path
    for SPLIT in $FILEPATH
    do
        FILE=$SPLIT
    done
    if [ "${FILE:0:1}" == "." ]; then
        continue
    fi
    IFS="${OIFS}" # Reset Internal Field Seperator

    # Ignore files that are not supposed to be checked, like images. (list defined in IGNORED_ENDINGS field above)
    IFS="." # Change seperator to "." so we can find the file ending
    for SPLIT in $FILE
    do
        ENDING=$SPLIT
    done
    IFS="${OIFS}" # Reset Internal Field Seperator
    IGNORE="0"
    for IGNORED_ENDING in ${IGNORED_ENDINGS[@]}
    do
        if [ `echo $IGNORED_ENDING | tr [:upper:] [:lower:]` == `echo $ENDING | tr [:upper:] [:lower:]` ] # case insensitive compare of strings
        then
            IGNORE="1"
        fi
    done
    if [ "$IGNORE" == "1" ]; then
        continue
    fi

    # Read changed file and pipe it to iconv to parse it as UTF-8
    $SVNLOOK cat -t "$TXN" "$REPOS" "$FILEPATH" | $ICONV -f UTF-8 -t UTF-16 -o /dev/null

    # If iconv exited with a non-zero value (error) then return error text and reject commit
    if [ "${PIPESTATUS[1]}" != "0" ]; then
        echo "Only UTF-8 files can be committed (violated in $FILEPATH)" 1>&2
        exit 1
    fi
    IFS="${NIFS}"
done

IFS="${OIFS}"

# All checks passed, so allow the commit.
exit 0

问题是，每次我尝试提交带有斯堪的纳维亚字符（如“æøå”）的文件时，iconv 都会返回错误（退出 1）。

如果我禁用脚本，请使用“æøå”提交文件，将“svnlook -t”和“svnlook cat -t”中的-t（事务）更改为-r（修订版），然后使用修订版手动运行脚本“æøå”文件的编号，然后iconv（以及脚本）返回出口0。一切都是花花公子。

为什么 svnlook cat -r 能按预期工作（返回 UTF-8 编码的“æøå”字符串），但 svnlook cat -t 不能？

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1 回答 1

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问题是，如果没有选择输出编码，iconv 显然会出现意外行为。

改变

$SVNLOOK cat -t "$TXN" "$REPOS" "$FILEPATH" | $ICONV -f UTF-8 -o /dev/null

至

$SVNLOOK cat -t "$TXN" "$REPOS" "$FILEPATH" | $ICONV -f UTF-8 -t UTF-16 -o /dev/null

解决了问题，并使脚本按预期运行:)

于 2011-12-09T10:23:50.907 回答