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author | Andreas Sandblad <andreas.sandblad@sonyericsson.com> | 2010-08-25 09:40:10 +0200 |
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committer | kmobs <persiansown@gmail.com> | 2010-09-01 00:14:20 -0500 |
commit | 75cfb5d5cfbee6ee9538f902fede047c9f45687d (patch) | |
tree | 5a00cd93fe3db01e2d402907ed72434b3016982a | |
parent | aba03906aee2c42cf60ac59f79f803312e2a6c22 (diff) | |
download | android_packages_providers_DownloadProvider-froyo-stable.tar.gz android_packages_providers_DownloadProvider-froyo-stable.tar.bz2 android_packages_providers_DownloadProvider-froyo-stable.zip |
Added support for downloading files with unicode charactersfroyo-stablefroyo
Currently only certain ASCII characters are allowed in a filename, all
other characters are replaced with an underscore. This gives bad
usability for foreign languages (e.g. japanese). This fix replaces the
current regexp with a method which replaces only those characters unsafe
to be used on VFAT filesystems (should work on most other
filesystems as well).
Change-Id: I114d47b4b35f28490e6b12493138355532fda499
-rw-r--r-- | src/com/android/providers/downloads/Helpers.java | 54 |
1 files changed, 52 insertions, 2 deletions
diff --git a/src/com/android/providers/downloads/Helpers.java b/src/com/android/providers/downloads/Helpers.java index c5e58cc2..574ab8da 100644 --- a/src/com/android/providers/downloads/Helpers.java +++ b/src/com/android/providers/downloads/Helpers.java @@ -282,8 +282,9 @@ public class Helpers { filename = Constants.DEFAULT_DL_FILENAME; } - filename = filename.replaceAll("[^a-zA-Z0-9\\.\\-_]+", "_"); - + // The VFAT file system is assumed as target for downloads. + // Replace invalid characters according to the specifications of VFAT. + filename = replaceInvalidVfatCharacters(filename); return filename; } @@ -771,4 +772,53 @@ public class Helpers { (c >= '0' && c <= '9'); } } + + /** + * Replace invalid filename characters according to + * specifications of the VFAT. + * @note Package-private due to testing. + */ + private static String replaceInvalidVfatCharacters(String filename) { + final char START_CTRLCODE = 0x00; + final char END_CTRLCODE = 0x1f; + final char QUOTEDBL = 0x22; + final char ASTERISK = 0x2A; + final char SLASH = 0x2F; + final char COLON = 0x3A; + final char LESS = 0x3C; + final char GREATER = 0x3E; + final char QUESTION = 0x3F; + final char BACKSLASH = 0x5C; + final char BAR = 0x7C; + final char DEL = 0x7F; + final char UNDERSCORE = 0x5F; + + StringBuffer sb = new StringBuffer(); + char ch; + boolean isRepetition = false; + for (int i = 0; i < filename.length(); i++) { + ch = filename.charAt(i); + if ((START_CTRLCODE <= ch && + ch <= END_CTRLCODE) || + ch == QUOTEDBL || + ch == ASTERISK || + ch == SLASH || + ch == COLON || + ch == LESS || + ch == GREATER || + ch == QUESTION || + ch == BACKSLASH || + ch == BAR || + ch == DEL){ + if (!isRepetition) { + sb.append(UNDERSCORE); + isRepetition = true; + } + } else { + sb.append(ch); + isRepetition = false; + } + } + return sb.toString(); + } } |