/usr/bin/grcat is in grc 1.4.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 | #! /usr/bin/python
import sys, os, string, re, signal
#some default definitions
colours = {
'none' : "",
'default' : "\033[0m",
'bold' : "\033[1m",
'underline' : "\033[4m",
'blink' : "\033[5m",
'reverse' : "\033[7m",
'concealed' : "\033[8m",
'black' : "\033[30m",
'red' : "\033[31m",
'green' : "\033[32m",
'yellow' : "\033[33m",
'blue' : "\033[34m",
'magenta' : "\033[35m",
'cyan' : "\033[36m",
'white' : "\033[37m",
'on_black' : "\033[40m",
'on_red' : "\033[41m",
'on_green' : "\033[42m",
'on_yellow' : "\033[43m",
'on_blue' : "\033[44m",
'on_magenta' : "\033[45m",
'on_cyan' : "\033[46m",
'on_white' : "\033[47m",
'beep' : "\007",
'previous' : "prev",
'unchanged' : "unchanged",
# non-standard attributes, supported by some terminals
'dark' : "\033[2m",
'italic' : "\033[3m",
'rapidblink' : "\033[6m",
'strikethrough': "\033[9m",
}
# ignore ctrl C - this is not ideal for standalone grcat, but
# enables propagating SIGINT to the other subprocess in grc
signal.signal(signal.SIGINT, signal.SIG_IGN)
def add2list(clist, m, patterncolour):
for group in range(0, len(m.groups()) +1):
if group < len(patterncolour):
clist.append((m.start(group), m.end(group), patterncolour[group]))
else:
clist.append((m.start(group), m.end(group), patterncolour[0]))
def get_colour(x):
if colours.has_key(x):
return colours[x]
elif len(x)>=2 and x[0]=='"' and x[-1]=='"':
return eval(x)
else:
raise ValueError, 'Bad colour specified: '+x
home = []
conffile = None
if os.environ.has_key('HOME'):
home = [os.environ['HOME']+"/.grc/"]
conffilepath = [""] + home + ["/usr/local/share/grc/", "/usr/share/grc/"]
conffile_arg = sys.argv[1] # tentative conffile
for i in conffilepath:
if os.path.isfile(i+conffile_arg):
conffile = i+conffile_arg
break
if not conffile:
sys.stderr.write("config file [%s] not found\n" % sys.argv[1])
sys.exit(1)
regexplist = []
f = open(conffile, "r")
is_last = 0
split = string.split
join = string.join
lower = string.lower
letters = string.letters
while not is_last:
ll = {'count':"more"}
while 1:
l = f.readline()
if l == "":
is_last = 1
break
if l[0] == "#" or l[0] == '\012':
continue
if not l[0] in letters:
break
keyword, value = split(l[:-1], "=", 1)
keyword = lower(keyword)
if not keyword in ["regexp", "colours", "count", "command", "skip"]:
raise ValueError, "Invalid keyword"
ll[keyword] = value
# Split string into one string per regex group
# e.g. split "brown bold, red" into "brown bold" and
# "red"
#colstrings = []
#for colgroup in split(ll['colours'], ','):
# colourlist = split(colgroup)
# c = ""
# for i in colourlist :
# c = c + colours[i]
# colstrings.append(c)
# do not try to understand the optimized form below :-)
if ll.has_key("colours"):
colstrings = map(
lambda colgroup:
(join(map(lambda x: get_colour(x), split(colgroup)),'')),
split(ll['colours'], ',')
)
ll['colours'] = colstrings
cs = ll['count']
ll['regexp'] = re.compile(ll['regexp']).search
regexplist.append(ll)
prevcolour = colours['default']
prevcount = "more"
blockflag = 0
freadline = sys.stdin.readline
while 1:
line = freadline()
if line == "" :
break
line = line[:-1]
clist = []
skip = 0
for pattern in regexplist:
pos = 0
has_key = pattern.has_key
currcount = pattern['count']
while 1:
m = pattern['regexp'](line, pos)
if m:
if has_key('colours'):
if currcount == "block":
blockflag = 1
blockcolour = pattern['colours'][0]
currcount = "stop"
break
elif currcount == "unblock":
blockflag = 0
blockcolour = colours['default']
currcount = "stop"
add2list(clist, m, pattern['colours'])
if currcount == "previous":
currcount = prevcount
if currcount == "stop":
break
if currcount == "more":
prevcount = "more"
pos = m.end(0)
else:
prevcount = "once"
pos = len(line)
if has_key('command'):
os.system(pattern['command'])
if not has_key('colours'):
break
if has_key('skip'):
skip = pattern['skip'] in ("yes", "1", "true")
if not has_key('colours'):
break
else: break
if m and currcount == "stop":
prevcount = "stop"
break
if len(clist) == 0:
prevcolour = colours['default']
first_char = 0
last_char = 0
length_line = len(line)
if blockflag == 0:
cline = (length_line+1)*[colours['default']]
for i in clist:
# each position in the string has its own colour
if i[2] == "prev":
cline[i[0]:i[1]] = [colours['default']+prevcolour]*(i[1]-i[0])
elif i[2] != "unchanged":
cline[i[0]:i[1]] = [colours['default']+i[2]]*(i[1]-i[0])
if i[0] == 0:
first_char = 1
if i[2] != "prev":
prevcolour = i[2]
if i[1] == length_line:
last_char = 1
if first_char == 0 or last_char == 0:
prevcolour = colours['default']
else:
cline = (length_line+1)*[blockcolour]
nline = ""
clineprev = ""
if not skip:
for i in range(len(line)):
if cline[i] == clineprev:
nline = nline + line[i]
else:
nline = nline + cline[i] + line[i]
clineprev = cline[i]
nline = nline + colours['default']
print nline
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