3  * Module Name: acgetline - local line editing
11  * Some or all of this work - Copyright (c) 1999 - 2025, Intel Corp.
28  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
104  * re-exports any such software from a foreign destination, Licensee shall
105  * ensure that the distribution and export/re-export of the software is in
106  * compliance with all laws, regulations, orders, or other restrictions of the
108  * any of its subsidiaries will export/re-export any technical data, process,
130  * 3. Neither the names of the above-listed copyright holders nor the names
159  * This is an os-independent implementation of line-editing services needed
162  * is in the correct line-editing mode such as raw and noecho. The OSL
192 /* Erase a single character on the input command line */
210  * PARAMETERS:  EndOfLine           - Current end-of-line index
211  *              CursorPosition      - Current cursor position within line
215  * DESCRIPTION: Clear the entire command line the hard way, but probably the
230         /* Clear line from current position to end of line */  in AcpiAcClearLine()
232         for (i = 0; i < (EndOfLine - CursorPosition); i++)  in AcpiAcClearLine()
238     /* Clear the entire line */  in AcpiAcClearLine()
240     for (; EndOfLine > 0; EndOfLine--)  in AcpiAcClearLine()
251  * PARAMETERS:  Buffer              - Where to return the command line
252  *              BufferLength        - Maximum length of Buffer
253  *              BytesRead           - Where the actual byte count is returned
257  * DESCRIPTION: Get the next input line from the terminal. NOTE: terminal
258  *              is expected to be in a mode that supports line-editing (raw,
271     UINT32                  MaxCommandIndex = AcpiGbl_NextCmdNum - 1;  in AcpiOsGetLine()
280     /* Always clear the line buffer before we read a new line */  in AcpiOsGetLine()
293         if (EndOfLine >= (BufferLength - 1))  in AcpiOsGetLine()
303             /* Echo the character (at EOL) and copy it to the line buffer */  in AcpiOsGetLine()
319                 (EndOfLine - CursorPosition + 1));  in AcpiOsGetLine()
324             /* Display the new part of line starting at the new character */  in AcpiOsGetLine()
330             ACPI_BACKUP_CURSOR (i, EndOfLine - CursorPosition);  in AcpiOsGetLine()
337             if (!EndOfLine) /* Any characters on the command line? */  in AcpiOsGetLine()
345                 EndOfLine--;  in AcpiOsGetLine()
346                 CursorPosition--;  in AcpiOsGetLine()
350             if (!CursorPosition) /* Do not backup beyond start of line */  in AcpiOsGetLine()
355             /* Remove the character from the line */  in AcpiOsGetLine()
357             memmove (&Buffer[CursorPosition - 1], &Buffer[CursorPosition],  in AcpiOsGetLine()
358                 (EndOfLine - CursorPosition + 1));  in AcpiOsGetLine()
360             /* Display the new part of line starting at the new character */  in AcpiOsGetLine()
363             fprintf (stdout, "%s ", &Buffer[CursorPosition - 1]);  in AcpiOsGetLine()
367             ACPI_BACKUP_CURSOR (i, EndOfLine - CursorPosition + 1);  in AcpiOsGetLine()
368             EndOfLine--;  in AcpiOsGetLine()
372                 CursorPosition--;  in AcpiOsGetLine()
376         case _ASCII_NEWLINE: /* Normal exit case at end of command line */  in AcpiOsGetLine()
379             /* Return the number of bytes in the command line string */  in AcpiOsGetLine()
422                     CursorPosition--;  in AcpiOsGetLine()
433                     /* Backup to start of line and print the entire line */  in AcpiOsGetLine()
441                     ACPI_BACKUP_CURSOR (i, EndOfLine - CursorPosition);  in AcpiOsGetLine()
477                 CurrentCommandIndex--;  in AcpiOsGetLine()
494                 /* If we are the end of the history list, output a clear new line */  in AcpiOsGetLine()