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termwidgets.spinh
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{
----------------------------------------------------------------------------------------------------
Filename: termwidgets.spinh
Description: Text widgets usable in a terminal device
Author: Jesse Burt
Started: Dec 14, 2019
Updated: Jan 8, 2025
Copyright (c) 2025 - See end of file for terms of use.
----------------------------------------------------------------------------------------------------
' Must be included using the preprocessor #include directive
' Requires:
' An object that has the following standard terminal methods:
' putchar(param)
' puts(param)
' puthexs(param, digits)
}
PUB hexdump(pbuff, baddr, adigs, nr_b, cols, gsz=1) | hxo, aoffs, aaddr, col
' Display a hexdump of a region of memory
' pbuff: pointer to location in memory to hexdump
' baddr: address used to display as base address in hex dump
' (affects display only - useful for dumps of an EE, flash chip, etc)
' adigs: number of digits used to display address
' nr_b: total number of bytes to display
' cols: number of bytes to display on each line
' gsz: group this many bytes together before drawing a space
' NOTE: if cols isn't evenly divisible by gsz, an incomplete group may be drawn
col := 0
hxo := aoffs := 0 ' initialize offsets to base
' address
repeat while (hxo < nr_b)
puthexs(baddr+hxo, adigs) ' show memory offset of line
puts(string(": "))
{ display data in hex }
repeat while (col < cols)
puthexs(byte[pbuff+hxo], 2)
col++
hxo++
ifnot ( col // gsz ) ' end of a group of bytes? draw a space
putchar(" ")
putchar("|") ' separate hex from ASCII
col := 0
{ display data in ASCII }
repeat while (col < cols)
aaddr := pbuff+aoffs
if (lookdown(byte[aaddr]: 32..126))
putchar(byte[aaddr]) ' display printable chars as-is
else
putchar(".") ' and unprintable chars as "."
col++
aoffs++
putchar("|")
col := 0 ' ready for next line
newline()
PUB hexdump_noascii(pbuff, baddr, adigs, nr_b, cols, gsz=1) | hxo, col
' Display a hexdump of a region of memory (hex display only)
' pbuff: pointer to location in memory to hexdump
' baddr: address used to display as base address in hex dump
' (affects display only - useful for dumps of an EE, flash chip, etc)
' adigs: number of digits used to display address
' nr_b: total number of bytes to display
' cols: number of bytes to display on each line
' gsz: group this many bytes together before drawing a space
' NOTE: if cols isn't evenly divisible by gsz, an incomplete group may be drawn
col := 0
hxo := 0 ' initialize offsets to base address
repeat while (hxo < nr_b)
puthexs(baddr+hxo, adigs) ' show memory offset of line
puts(string(": "))
{ display data in hex }
repeat while (col < cols)
puthexs(byte[pbuff+hxo], 2)
hxo++
col++
ifnot ( col // gsz ) ' end of a group of bytes? draw a space
putchar(" ")
col := 0 ' ready for next line
newline()
PUB hexdump_hl(p_buff, baddr, adigs, len, cols, hst, hend, hfg, hbg) | hoffs, aoffs, aaddr, col, bt, ft, hs
' Display a hexdump of a region of memory, highlighting a selected region
' p_buff: pointer to location in memory to hexdump
' baddr: address used to display as base address in hex dump
' (affects display only - useful for dumps of an EE, flash chip, etc)
' adigs: number of digits used to display address
' len: total number of bytes to display
' cols: number of bytes to display on each line
' hst: start position to highlight (relative to baddr, i.e., 0..n)
' hend: end position to highlight (relative to baddr)
' hfg: highlight foreground (text) color
' hbg: highlight background color
' NOTE: Call the display/terminal driver's bgcolor() and fgcolor() methods with your normal
' colors before calling this method
bt := _bgcolor ' remember the user's current terminal
ft := _fgcolor ' colors
col := 0
hoffs := aoffs := 0 ' initialize offsets to base
' address
repeat while (hoffs < len)
puthexs(baddr+hoffs, adigs) ' show memory offset of line
puts(@": ")
' display data in hex
repeat while (col < cols)
if ( (hoffs => hst) and (hoffs =< hend) and (not hs) )
' highlight region start: set the colors (only once per row)
bgcolor(hbg)
fgcolor(hfg)
hs := true ' set flag: highlight region started
puthexs(byte[p_buff+hoffs], 2)
if ( hoffs == hend ) ' end of highlight region; reset colors
bgcolor(bt)
fgcolor(ft)
putchar(" ") ' space between each byte
col++
hoffs++
bgcolor(bt) ' reset to user's colors
fgcolor(ft)
putchar("|") ' separate hex from ASCII
col := 0
hs := false
' display data in ASCII
repeat while (col < cols)
if ( (aoffs => hst) and (aoffs =< hend) and (not hs) )
bgcolor(hbg)
fgcolor(hfg)
hs := true
aaddr := p_buff+aoffs
if ( lookdown(byte[aaddr]: 32..126) )
putchar(byte[aaddr]) ' display printable chars as-is
else
putchar(".") ' and unprintable chars as "."
if ( aoffs == hend )
bgcolor(bt)
fgcolor(ft)
col++
aoffs++
bgcolor(bt)
fgcolor(ft)
putchar("|")
col := 0 ' ready for next line
newline()
hs := false
DAT
{
Copyright 2025 Jesse Burt
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
}