summaryrefslogtreecommitdiffstats
path: root/src/vppinfra/macros.c
blob: ce4cc9bc81b17e3d393e46c0a88578e8d98014f3 (plain)
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

@media only all and (prefers-color-scheme: dark) {
.highlight .hll { background-color: #49483e }
.highlight .c { color: #75715e } /* Comment */
.highlight .err { color: #960050; background-color: #1e0010 } /* Error */
.highlight .k { color: #66d9ef } /* Keyword */
.highlight .l { color: #ae81ff } /* Literal */
.highlight .n { color: #f8f8f2 } /* Name */
.highlight .o { color: #f92672 } /* Operator */
.highlight .p { color: #f8f8f2 } /* Punctuation */
.highlight .ch { color: #75715e } /* Comment.Hashbang */
.highlight .cm { color: #75715e } /* Comment.Multiline */
.highlight .cp { color: #75715e } /* Comment.Preproc */
.highlight .cpf { color: #75715e } /* Comment.PreprocFile */
.highlight .c1 { color: #75715e } /* Comment.Single */
.highlight .cs { color: #75715e } /* Comment.Special */
.highlight .gd { color: #f92672 } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gi { color: #a6e22e } /* Generic.Inserted */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #75715e } /* Generic.Subheading */
.highlight .kc { color: #66d9ef } /* Keyword.Constant */
.highlight .kd { color: #66d9ef } /* Keyword.Declaration */
.highlight .kn { color: #f92672 } /* Keyword.Namespace */
.highlight .kp { color: #66d9ef } /* Keyword.Pseudo */
.highlight .kr { color: #66d9ef } /* Keyword.Reserved */
.highlight .kt { color: #66d9ef } /* Keyword.Type */
.highlight .ld { color: #e6db74 } /* Literal.Date */
.highlight .m { color: #ae81ff } /* Literal.Number */
.highlight .s { color: #e6db74 } /* Literal.String */
.highlight .na { color: #a6e22e } /* Name.Attribute */
.highlight .nb { color: #f8f8f2 } /* Name.Builtin */
.highlight .nc { color: #a6e22e } /* Name.Class */
.highlight .no { color: #66d9ef } /* Name.Constant */
.highlight .nd { color: #a6e22e } /* Name.Decorator */
.highlight .ni { color: #f8f8f2 } /* Name.Entity */
.highlight .ne { color: #a6e22e } /* Name.Exception */
.highlight .nf { color: #a6e22e } /* Name.Function */
.highlight .nl { color: #f8f8f2 } /* Name.Label */
.highlight .nn { color: #f8f8f2 } /* Name.Namespace */
.highlight .nx { color: #a6e22e } /* Name.Other */
.highlight .py { color: #f8f8f2 } /* Name.Property */
.highlight .nt { color: #f92672 } /* Name.Tag */
.highlight .nv { color: #f8f8f2 } /* Name.Variable */
.highlight .ow { color: #f92672 } /* Operator.Word */
.highlight .w { color: #f8f8f2 } /* Text.Whitespace */
.highlight .mb { color: #ae81ff } /* Literal.Number.Bin */
.highlight .mf { color: #ae81ff } /* Literal.Number.Float */
.highlight .mh { color: #ae81ff } /* Literal.Number.Hex */
.highlight .mi { color: #ae81ff } /* Literal.Number.Integer */
.highlight .mo { color: #ae81ff } /* Literal.Number.Oct */
.highlight .sa { color: #e6db74 } /* Literal.String.Affix */
.highlight .sb { color: #e6db74 } /* Literal.String.Backtick */
.highlight .sc { color: #e6db74 } /* Literal.String.Char */
.highlight .dl { color: #e6db74 } /* Literal.String.Delimiter */
.highlight .sd { color: #e6db74 } /* Literal.String.Doc */
.highlight .s2 { color: #e6db74 } /* Literal.String.Double */
.highlight .se { color: #ae81ff } /* Literal.String.Escape */
.highlight .sh { color: #e6db74 } /* Literal.String.Heredoc */
.highlight .si { color: #e6db74 } /* Literal.String.Interpol */
.highlight .sx { color: #e6db74 } /* Literal.String.Other */
.highlight .sr { color: #e6db74 } /* Literal.String.Regex */
.highlight .s1 { color: #e6db74 } /* Literal.String.Single */
.highlight .ss { color: #e6db74 } /* Literal.String.Symbol */
.highlight .bp { color: #f8f8f2 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #a6e22e } /* Name.Function.Magic */
.highlight .vc { color: #f8f8f2 } /* Name.Variable.Class */
.highlight .vg { color: #f8f8f2 } /* Name.Variable.Global */
.highlight .vi { color: #f8f8f2 } /* Name.Variable.Instance */
.highlight .vm { color: #f8f8f2 } /* Name.Variable.Magic */
.highlight .il { color: #ae81ff } /* Literal.Number.Integer.Long */
}
@media (prefers-color-scheme: light) {
.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* N
/*
  macros.c - a simple macro expander

  Copyright (c) 2010, 2014 Cisco and/or its affiliates.

  * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or impl
lass="p">(c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || (c == '_')) return 1; return 0; } static i8 * builtin_eval (macro_main_t * mm, i8 * varname, i32 complain) { uword *p; i8 *(*fp) (macro_main_t *, i32); p = hash_get_mem (mm->the_builtin_eval_hash, varname); if (p == 0) return 0; fp = (void *) (p[0]); return (*fp) (mm, complain); } int clib_macro_unset (macro_main_t * mm, char *name) { hash_pair_t *p; u8 *key, *value; p = hash_get_pair (mm->the_value_table_hash, name); if (p == 0) return 1; key = (u8 *) (p->key); value = (u8 *) (p->value[0]); hash_unset_mem (mm->the_value_table_hash, name); vec_free (value); vec_free (key); return 0; } int clib_macro_set_value (macro_main_t * mm, char *name, char *value) { u8 *key_copy, *value_copy; int rv; rv = clib_macro_unset (mm, name); key_copy = format (0, "%s%c", name, 0); value_copy = format (0, "%s%c", value, 0); hash_set_mem (mm->the_value_table_hash, key_copy, value_copy); return rv; } i8 * clib_macro_get_value (macro_main_t * mm, char *name) { uword *p; p = hash_get_mem (mm->the_value_table_hash, name); if (p) return (i8 *) (p[0]); else return 0; } /* * eval: takes a string, returns a vector. * looks up $foobar in the variable table. */ i8 * clib_macro_eval (macro_main_t * mm, i8 * s, i32 complain) { i8 *rv = 0; i8 *varname, *varvalue; i8 *ts; while (*s) { switch (*s) { case '\\': s++; /* fallthrough */ default: vec_add1 (rv, *s); s++; break; case '$': s++; varname = 0; /* * Make vector with variable name in it. */ while (*s && (macro_isalnum (*s) || (*s == '_') || (*s == '('))) { /* handle $(foo) */ if (*s == '(') { s++; /* skip '(' */ while (*s && *s != ')') { vec_add1 (varname, *s); s++; } if (*s) s++; /* skip ')' */ break; } vec_add1 (varname, *s); s++; } /* null terminate */ vec_add1 (varname, 0); /* Look for a builtin, e.g. $my_hostname */ if (!(varvalue = builtin_eval (mm, varname, complain))) { /* Look in value table */ if (!varvalue) { char *tmp = clib_macro_get_value (mm, varname); if (tmp) varvalue = (i8 *) format (0, "%s%c", tmp, 0); } #ifdef CLIB_UNIX /* Look in environment. */ if (!varvalue) { char *tmp = getenv (varname); if (tmp) varvalue = (i8 *) format (0, "%s%c", tmp, 0); } #endif /* CLIB_UNIX */ } if (varvalue) { /* recursively evaluate */ ts = clib_macro_eval (mm, varvalue, complain); vec_free (varvalue); /* add results to answer */ vec_append (rv, ts); /* Remove NULL termination or the results are sad */ _vec_len (rv) = vec_len (rv) - 1; vec_free (ts); } else { if (complain) clib_warning ("Undefined Variable Reference: %s\n", varname); vec_append (rv, format (0, "UNSET ")); _vec_len (rv) = vec_len (rv) - 1; } vec_free (varname); } } vec_add1 (rv, 0); return (rv); } /* * eval: takes a string, returns a vector. * looks up $foobar in the variable table. */ i8 * clib_macro_eval_dollar (macro_main_t * mm, i8 * s, i32 complain) { i8 *s2; i8 *rv; s2 = (i8 *) format (0, "$(%s)%c", s, 0); rv = clib_macro_eval (mm, s2, complain); vec_free (s2); return (rv); } void clib_macro_add_builtin (macro_main_t * mm, char *name, void *eval_fn) { hash_set_mem (mm->the_builtin_eval_hash, name, (uword) eval_fn); } #ifdef CLIB_UNIX static i8 * eval_hostname (macro_main_t * mm, i32 complain) { char tmp[128]; if (gethostname (tmp, sizeof (tmp))) return ((i8 *) format (0, "gethostname-error%c", 0)); return ((i8 *) format (0, "%s%c", tmp, 0)); } #endif void clib_macro_init (macro_main_t * mm) { if (mm->the_builtin_eval_hash != 0) { clib_warning ("mm %p already initialized", mm); return; } mm->the_builtin_eval_hash = hash_create_string (0, sizeof (uword)); mm->the_value_table_hash = hash_create_string (0, sizeof (uword)); #ifdef CLIB_UNIX hash_set_mem (mm->the_builtin_eval_hash, "hostname", (uword) eval_hostname); #endif } void clib_macro_free (macro_main_t * mm) { hash_pair_t *p; u8 **strings_to_free = 0; int i; hash_free (mm->the_builtin_eval_hash); /* *INDENT-OFF* */ hash_foreach_pair (p, mm->the_value_table_hash, ({ vec_add1 (strings_to_free, (u8 *) (p->key)); vec_add1 (strings_to_free, (u8 *) (p->value[0])); })); /* *INDENT-ON* */ for (i = 0; i < vec_len (strings_to_free); i++) vec_free (strings_to_free[i]); vec_free (strings_to_free); hash_free (mm->the_value_table_hash); } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */