Lugaru's Epsilon

Epsilon User's Manual and Reference
   Primitives and EEL Subroutines
      Buffer Primitives
         . . .
         Other Movement Functions
         Sorting Primitives
         Other Formatting Functions
         Comparing Primitives
         Managing Buffers
         . . .
      Display Primitives
         Creating & Destroying Windows
         Window Resizing Primitives
         Preserving Window Arrangements
         . . .
      . . .

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Epsilon User's Manual and Reference > Primitives and EEL Subroutines > Buffer Primitives >

Other Formatting Functions

right_align_columns(char *pat)

The right_align_columns( ) subroutine locates all lines containing a match for the regular expression pattern pat. It notes the ending column of each match. (It assumes that pat occurs no more than one per line.)

Then, if some matches end at an earlier column than others, it adds indentation before each match as needed, so all matches will end at the same column.

columnize_buffer_text(int buf, int width, int margin)

The columnize_buffer_text( ) subroutine takes the lines in the buffer buf and reformats them into columns. It leaves a margin between columns of margin spaces, and chooses the number of columns so that the resulting buffer is at most width characters wide (unless an original line in the buffer is already wider than width).

do_buffer_to_hex(char *b, char transp[256], ?int flags)

The do_buffer_to_hex( ) primitive writes a hex view of the current buffer to the buffer b, creating or emptying it first. It ignores any narrowing in the original buffer. It uses the 256 character transp array to help construct the last column of the hex view; each character from the buffer will be replaced by the character at that offset in the transp array. If the buffer contains Unicode characters with codes higher than 255, they'll appear as-is.

If a buffer might contain Unicode characters, the primitive uses a display format that leaves room for 16 bits per character; otherwise it uses a format with room for 8 bits per character. The optional flags argument, if 1, forces 8 bits per character. If any character in the buffer doesn't fit in 8 bits, only its lower 8 bits will be shown in the hex listing.

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