m4/pprint.m4

   1 # Pretty printing macros.
   2 #
   3 # Author: Philippe Proulx <pproulx@efficios.com>
   4
   5 # PPRINT_INIT(): initializes the pretty printing system.
   6 #
   7 # Use this macro before using any other PPRINT_* macro.
   8 AC_DEFUN([PPRINT_INIT], [
   9   m4_define([PPRINT_CONFIG_TS], [50])
  10   m4_define([PPRINT_CONFIG_INDENT], [2])
  11   PPRINT_YES_MSG=yes
  12   PPRINT_NO_MSG=no
  13
  14   # find tput, which tells us if colors are supported and gives us color codes
  15   AC_PATH_PROG([pprint_tput], [tput])
  16
  17   AS_IF([test -n "$pprint_tput"], [
  18     AS_IF([test -n "$PS1" && test `"$pprint_tput" colors` -ge 8 && test -t 1], [
  19       # interactive shell and colors supported and standard output
  20       # file descriptor is opened on a terminal
  21       PPRINT_COLOR_TXTBLK="`"$pprint_tput" setf 0`"
  22       PPRINT_COLOR_TXTBLU="`"$pprint_tput" setf 1`"
  23       PPRINT_COLOR_TXTGRN="`"$pprint_tput" setf 2`"
  24       PPRINT_COLOR_TXTCYN="`"$pprint_tput" setf 3`"
  25       PPRINT_COLOR_TXTRED="`"$pprint_tput" setf 4`"
  26       PPRINT_COLOR_TXTPUR="`"$pprint_tput" setf 5`"
  27       PPRINT_COLOR_TXTYLW="`"$pprint_tput" setf 6`"
  28       PPRINT_COLOR_TXTWHT="`"$pprint_tput" setf 7`"
  29       PPRINT_COLOR_BLD=`"$pprint_tput" bold`
  30       PPRINT_COLOR_BLDBLK="$PPRINT_COLOR_BLD$PPRINT_COLOR_TXTBLK"
  31       PPRINT_COLOR_BLDBLU="$PPRINT_COLOR_BLD$PPRINT_COLOR_TXTBLU"
  32       PPRINT_COLOR_BLDGRN="$PPRINT_COLOR_BLD$PPRINT_COLOR_TXTGRN"
  33       PPRINT_COLOR_BLDCYN="$PPRINT_COLOR_BLD$PPRINT_COLOR_TXTCYN"
  34       PPRINT_COLOR_BLDRED="$PPRINT_COLOR_BLD$PPRINT_COLOR_TXTRED"
  35       PPRINT_COLOR_BLDPUR="$PPRINT_COLOR_BLD$PPRINT_COLOR_TXTPUR"
  36       PPRINT_COLOR_BLDYLW="$PPRINT_COLOR_BLD$PPRINT_COLOR_TXTYLW"
  37       PPRINT_COLOR_BLDWHT="$PPRINT_COLOR_BLD$PPRINT_COLOR_TXTWHT"
  38       PPRINT_COLOR_RST="`"$pprint_tput" sgr0`"
  39
  40       # colored yes and no
  41       PPRINT_YES_MSG="$PPRINT_COLOR_BLDGRN$PPRINT_YES_MSG$PPRINT_COLOR_RST"
  42       PPRINT_NO_MSG="$PPRINT_COLOR_BLDRED$PPRINT_NO_MSG$PPRINT_COLOR_RST"
  43
  44       # subtitle color
  45       PPRINT_COLOR_SUBTITLE="$PPRINT_COLOR_BLDCYN"
  46     ])
  47   ])
  48 ])
  49
  50 # PPRINT_SET_INDENT(indent): sets the current indentation.
  51 #
  52 # Use PPRINT_INIT() before using this macro.
  53 AC_DEFUN([PPRINT_SET_INDENT], [
  54   m4_define([PPRINT_CONFIG_INDENT], [$1])
  55 ])
  56
  57 # PPRINT_SET_TS(ts): sets the current tab stop.
  58 #
  59 # Use PPRINT_INIT() before using this macro.
  60 AC_DEFUN([PPRINT_SET_TS], [
  61   m4_define([PPRINT_CONFIG_TS], [$1])
  62 ])
  63
  64 # PPRINT_SUBTITLE(subtitle): pretty prints a subtitle.
  65 #
  66 # The subtitle is put as is in a double-quoted shell string so the user
  67 # needs to escape ".
  68 #
  69 # Use PPRINT_INIT() before using this macro.
  70 AC_DEFUN([PPRINT_SUBTITLE], [
  71   AS_ECHO(["${PPRINT_COLOR_SUBTITLE}$1$PPRINT_COLOR_RST"])
  72 ])
  73
  74 AC_DEFUN([_PPRINT_INDENT], [
  75   m4_if(PPRINT_CONFIG_INDENT, 0, [
  76   ], [
  77     m4_for([pprint_i], [0], m4_eval(PPRINT_CONFIG_INDENT * 2 - 1), [1], [
  78       AS_ECHO_N([" "])
  79     ])
  80   ])
  81 ])
  82
  83 # PPRINT_PROP_STRING(title, value, title_color?): pretty prints a
  84 # string property.
  85 #
  86 # The title is put as is in a double-quoted shell string so the user
  87 # needs to escape ".
  88 #
  89 # The $PPRINT_CONFIG_INDENT variable must be set to the desired indentation
  90 # level.
  91 #
  92 # Use PPRINT_INIT() before using this macro.
  93 AC_DEFUN([PPRINT_PROP_STRING], [
  94   m4_pushdef([pprint_title], [$1])
  95   m4_pushdef([pprint_value], [$2])
  96   m4_pushdef([pprint_title_color], m4_default([$3], []))
  97   m4_pushdef([pprint_title_len], m4_len(pprint_title))
  98   m4_pushdef([pprint_spaces_cnt], m4_eval(PPRINT_CONFIG_TS - pprint_title_len - (PPRINT_CONFIG_INDENT * 2) - 1))
  99
 100   m4_if(m4_eval(pprint_spaces_cnt <= 0), [1], [
 101     m4_define([pprint_spaces_cnt], [1])
 102   ])
 103
 104   m4_pushdef([pprint_spaces], [])
 105
 106   m4_for([pprint_i], 0, m4_eval(pprint_spaces_cnt - 1), [1], [
 107     m4_append([pprint_spaces], [ ])
 108   ])
 109
 110   _PPRINT_INDENT
 111
 112   AS_ECHO_N(["pprint_title_color""pprint_title$PPRINT_COLOR_RST:pprint_spaces"])
 113   AS_ECHO(["${PPRINT_COLOR_BLD}pprint_value$PPRINT_COLOR_RST"])
 114
 115   m4_popdef([pprint_spaces])
 116   m4_popdef([pprint_spaces_cnt])
 117   m4_popdef([pprint_title_len])
 118   m4_popdef([pprint_title_color])
 119   m4_popdef([pprint_value])
 120   m4_popdef([pprint_title])
 121 ])
 122
 123 # PPRINT_PROP_BOOL(title, value, title_color?): pretty prints a boolean
 124 # property.
 125 #
 126 # The title is put as is in a double-quoted shell string so the user
 127 # needs to escape ".
 128 #
 129 # The value is evaluated at shell runtime. Its evaluation must be
 130 # 0 (false) or 1 (true).
 131 #
 132 # Uses the PPRINT_PROP_STRING() with the "yes" or "no" string.
 133 #
 134 # Use PPRINT_INIT() before using this macro.
 135 AC_DEFUN([PPRINT_PROP_BOOL], [
 136   m4_pushdef([pprint_title], [$1])
 137   m4_pushdef([pprint_value], [$2])
 138
 139   test pprint_value -eq 0 && pprint_msg="$PPRINT_NO_MSG" || pprint_msg="$PPRINT_YES_MSG"
 140
 141   m4_if([$#], [3], [
 142     PPRINT_PROP_STRING(pprint_title, [$pprint_msg], $3)
 143   ], [
 144     PPRINT_PROP_STRING(pprint_title, [$pprint_msg])
 145   ])
 146
 147   m4_popdef([pprint_value])
 148   m4_popdef([pprint_title])
 149 ])
 150
 151 # PPRINT_WARN(msg): pretty prints a warning message.
 152 #
 153 # The message is put as is in a double-quoted shell string so the user
 154 # needs to escape ".
 155 #
 156 # Use PPRINT_INIT() before using this macro.
 157 AC_DEFUN([PPRINT_WARN], [
 158   m4_pushdef([pprint_msg], [$1])
 159
 160   _PPRINT_INDENT
 161   AS_ECHO(["${PPRINT_COLOR_TXTYLW}WARNING:$PPRINT_COLOR_RST ${PPRINT_COLOR_BLDYLW}pprint_msg$PPRINT_COLOR_RST"])
 162
 163   m4_popdef([pprint_msg])
 164 ])
 165
 166 # PPRINT_ERROR(msg): pretty prints an error message and exits.
 167 #
 168 # The message is put as is in a double-quoted shell string so the user
 169 # needs to escape ".
 170 #
 171 # Use PPRINT_INIT() before using this macro.
 172 AC_DEFUN([PPRINT_ERROR], [
 173   m4_pushdef([pprint_msg], [$1])
 174
 175   AC_MSG_ERROR([${PPRINT_COLOR_BLDRED}pprint_msg$PPRINT_COLOR_RST])
 176
 177   m4_popdef([pprint_msg])
 178 ])