Annotation of embedaddon/sudo/m4/ltsugar.m4, revision 1.1
1.1 ! misho 1: # ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*-
! 2: #
! 3: # Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
! 4: # Written by Gary V. Vaughan, 2004
! 5: #
! 6: # This file is free software; the Free Software Foundation gives
! 7: # unlimited permission to copy and/or distribute it, with or without
! 8: # modifications, as long as this notice is preserved.
! 9:
! 10: # serial 6 ltsugar.m4
! 11:
! 12: # This is to help aclocal find these macros, as it can't see m4_define.
! 13: AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
! 14:
! 15:
! 16: # lt_join(SEP, ARG1, [ARG2...])
! 17: # -----------------------------
! 18: # Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
! 19: # associated separator.
! 20: # Needed until we can rely on m4_join from Autoconf 2.62, since all earlier
! 21: # versions in m4sugar had bugs.
! 22: m4_define([lt_join],
! 23: [m4_if([$#], [1], [],
! 24: [$#], [2], [[$2]],
! 25: [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])])
! 26: m4_define([_lt_join],
! 27: [m4_if([$#$2], [2], [],
! 28: [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])])
! 29:
! 30:
! 31: # lt_car(LIST)
! 32: # lt_cdr(LIST)
! 33: # ------------
! 34: # Manipulate m4 lists.
! 35: # These macros are necessary as long as will still need to support
! 36: # Autoconf-2.59 which quotes differently.
! 37: m4_define([lt_car], [[$1]])
! 38: m4_define([lt_cdr],
! 39: [m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
! 40: [$#], 1, [],
! 41: [m4_dquote(m4_shift($@))])])
! 42: m4_define([lt_unquote], $1)
! 43:
! 44:
! 45: # lt_append(MACRO-NAME, STRING, [SEPARATOR])
! 46: # ------------------------------------------
! 47: # Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'.
! 48: # Note that neither SEPARATOR nor STRING are expanded; they are appended
! 49: # to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked).
! 50: # No SEPARATOR is output if MACRO-NAME was previously undefined (different
! 51: # than defined and empty).
! 52: #
! 53: # This macro is needed until we can rely on Autoconf 2.62, since earlier
! 54: # versions of m4sugar mistakenly expanded SEPARATOR but not STRING.
! 55: m4_define([lt_append],
! 56: [m4_define([$1],
! 57: m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])
! 58:
! 59:
! 60:
! 61: # lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
! 62: # ----------------------------------------------------------
! 63: # Produce a SEP delimited list of all paired combinations of elements of
! 64: # PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list
! 65: # has the form PREFIXmINFIXSUFFIXn.
! 66: # Needed until we can rely on m4_combine added in Autoconf 2.62.
! 67: m4_define([lt_combine],
! 68: [m4_if(m4_eval([$# > 3]), [1],
! 69: [m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl
! 70: [[m4_foreach([_Lt_prefix], [$2],
! 71: [m4_foreach([_Lt_suffix],
! 72: ]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[,
! 73: [_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])])
! 74:
! 75:
! 76: # lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
! 77: # -----------------------------------------------------------------------
! 78: # Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
! 79: # by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
! 80: m4_define([lt_if_append_uniq],
! 81: [m4_ifdef([$1],
! 82: [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
! 83: [lt_append([$1], [$2], [$3])$4],
! 84: [$5])],
! 85: [lt_append([$1], [$2], [$3])$4])])
! 86:
! 87:
! 88: # lt_dict_add(DICT, KEY, VALUE)
! 89: # -----------------------------
! 90: m4_define([lt_dict_add],
! 91: [m4_define([$1($2)], [$3])])
! 92:
! 93:
! 94: # lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
! 95: # --------------------------------------------
! 96: m4_define([lt_dict_add_subkey],
! 97: [m4_define([$1($2:$3)], [$4])])
! 98:
! 99:
! 100: # lt_dict_fetch(DICT, KEY, [SUBKEY])
! 101: # ----------------------------------
! 102: m4_define([lt_dict_fetch],
! 103: [m4_ifval([$3],
! 104: m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
! 105: m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
! 106:
! 107:
! 108: # lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
! 109: # -----------------------------------------------------------------
! 110: m4_define([lt_if_dict_fetch],
! 111: [m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
! 112: [$5],
! 113: [$6])])
! 114:
! 115:
! 116: # lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
! 117: # --------------------------------------------------------------
! 118: m4_define([lt_dict_filter],
! 119: [m4_if([$5], [], [],
! 120: [lt_join(m4_quote(m4_default([$4], [[, ]])),
! 121: lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
! 122: [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
! 123: ])
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