diff options
| author | jcarsey <jcarsey@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-03-04 21:54:02 +0000 |
|---|---|---|
| committer | jcarsey <jcarsey@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-03-04 21:54:02 +0000 |
| commit | 365aa98a5dfba45b7ecfe04495cb28e9e05d2a45 (patch) | |
| tree | 3a13e86c98a2ae6829c09483c944c819ac6f0c95 /ShellPkg/Library | |
| parent | fb2ae5fdb5207233e9be8f73d552860d9169fa8e (diff) | |
| download | edk2-platforms-365aa98a5dfba45b7ecfe04495cb28e9e05d2a45.tar.xz | |
ShellPkg: Add ShellPrintHelp function to ShellLib.
This function allows for easier access to printing standard command help.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Matt Stanbro <Matthew.A.Stanbro@intel.com>
Reviewed-by: Jaben Carsey <Jaben.carsey@intel.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14159 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ShellPkg/Library')
| -rw-r--r-- | ShellPkg/Library/UefiShellLib/UefiShellLib.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/ShellPkg/Library/UefiShellLib/UefiShellLib.c b/ShellPkg/Library/UefiShellLib/UefiShellLib.c index 4c09069f5a..6b985ed64e 100644 --- a/ShellPkg/Library/UefiShellLib/UefiShellLib.c +++ b/ShellPkg/Library/UefiShellLib/UefiShellLib.c @@ -4061,6 +4061,66 @@ ShellFileHandleReadLine( }
/**
+ Function to print help file / man page content in the spec from the UEFI Shell protocol GetHelpText function.
+
+ @param[in] CommandToGetHelpOn Pointer to a string containing the command name of help file to be printed.
+ @param[in] SectionToGetHelpOn Pointer to the section specifier(s).
+ @param[in] PrintCommandText If TRUE, prints the command followed by the help content, otherwise prints
+ the help content only.
+ @retval EFI_DEVICE_ERROR The help data format was incorrect.
+ @retval EFI_NOT_FOUND The help data could not be found.
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+EFIAPI
+ShellPrintHelp (
+ IN CONST CHAR16 *CommandToGetHelpOn,
+ IN CONST CHAR16 *SectionToGetHelpOn,
+ IN BOOLEAN PrintCommandText
+ )
+{
+ EFI_STATUS Status;
+ CHAR16 *OutText;
+
+ OutText = NULL;
+
+ //
+ // Get the string to print based
+ //
+ Status = gEfiShellProtocol->GetHelpText (CommandToGetHelpOn, SectionToGetHelpOn, &OutText);
+
+ //
+ // make sure we got a valid string
+ //
+ if (EFI_ERROR(Status)){
+ return Status;
+ }
+ if (OutText == NULL || StrLen(OutText) == 0) {
+ return EFI_NOT_FOUND;
+ }
+
+ //
+ // Chop off trailing stuff we dont need
+ //
+ while (OutText[StrLen(OutText)-1] == L'\r' || OutText[StrLen(OutText)-1] == L'\n' || OutText[StrLen(OutText)-1] == L' ') {
+ OutText[StrLen(OutText)-1] = CHAR_NULL;
+ }
+
+ //
+ // Print this out to the console
+ //
+ if (PrintCommandText) {
+ ShellPrintEx(-1, -1, L"%H%-14s%N- %s\r\n", CommandToGetHelpOn, OutText);
+ } else {
+ ShellPrintEx(-1, -1, L"%N%s\r\n", OutText);
+ }
+
+ SHELL_FREE_NON_NULL(OutText);
+
+ return EFI_SUCCESS;
+}
+
+/**
Function to delete a file by name
@param[in] FileName Pointer to file name to delete.
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