1*a3cefe7fSPierre Pronchery /*
2*a3cefe7fSPierre Pronchery * parser.c
3*a3cefe7fSPierre Pronchery * rfc822 message parser
4*a3cefe7fSPierre Pronchery *
5*a3cefe7fSPierre Pronchery * Copyright (c) 2018 pkgconf authors (see AUTHORS).
6*a3cefe7fSPierre Pronchery *
7*a3cefe7fSPierre Pronchery * Permission to use, copy, modify, and/or distribute this software for any
8*a3cefe7fSPierre Pronchery * purpose with or without fee is hereby granted, provided that the above
9*a3cefe7fSPierre Pronchery * copyright notice and this permission notice appear in all copies.
10*a3cefe7fSPierre Pronchery *
11*a3cefe7fSPierre Pronchery * This software is provided 'as is' and without any warranty, express or
12*a3cefe7fSPierre Pronchery * implied. In no event shall the authors be liable for any damages arising
13*a3cefe7fSPierre Pronchery * from the use of this software.
14*a3cefe7fSPierre Pronchery */
15*a3cefe7fSPierre Pronchery
16*a3cefe7fSPierre Pronchery #include <libpkgconf/config.h>
17*a3cefe7fSPierre Pronchery #include <libpkgconf/stdinc.h>
18*a3cefe7fSPierre Pronchery #include <libpkgconf/libpkgconf.h>
19*a3cefe7fSPierre Pronchery
20*a3cefe7fSPierre Pronchery /*
21*a3cefe7fSPierre Pronchery * !doc
22*a3cefe7fSPierre Pronchery *
23*a3cefe7fSPierre Pronchery * .. c:function:: pkgconf_pkg_t *pkgconf_pkg_new_from_file(const pkgconf_client_t *client, const char *filename, FILE *f)
24*a3cefe7fSPierre Pronchery *
25*a3cefe7fSPierre Pronchery * Parse a .pc file into a pkgconf_pkg_t object structure.
26*a3cefe7fSPierre Pronchery *
27*a3cefe7fSPierre Pronchery * :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
28*a3cefe7fSPierre Pronchery * :param char* filename: The filename of the package file (including full path).
29*a3cefe7fSPierre Pronchery * :param FILE* f: The file object to read from.
30*a3cefe7fSPierre Pronchery * :returns: A ``pkgconf_pkg_t`` object which contains the package data.
31*a3cefe7fSPierre Pronchery * :rtype: pkgconf_pkg_t *
32*a3cefe7fSPierre Pronchery */
33*a3cefe7fSPierre Pronchery void
pkgconf_parser_parse(FILE * f,void * data,const pkgconf_parser_operand_func_t * ops,const pkgconf_parser_warn_func_t warnfunc,const char * filename)34*a3cefe7fSPierre Pronchery pkgconf_parser_parse(FILE *f, void *data, const pkgconf_parser_operand_func_t *ops, const pkgconf_parser_warn_func_t warnfunc, const char *filename)
35*a3cefe7fSPierre Pronchery {
36*a3cefe7fSPierre Pronchery pkgconf_buffer_t readbuf = PKGCONF_BUFFER_INITIALIZER;
37*a3cefe7fSPierre Pronchery size_t lineno = 0;
38*a3cefe7fSPierre Pronchery bool continue_reading = true;
39*a3cefe7fSPierre Pronchery
40*a3cefe7fSPierre Pronchery while (continue_reading)
41*a3cefe7fSPierre Pronchery {
42*a3cefe7fSPierre Pronchery char op, *p, *key, *value;
43*a3cefe7fSPierre Pronchery bool warned_key_whitespace = false, warned_value_whitespace = false;
44*a3cefe7fSPierre Pronchery
45*a3cefe7fSPierre Pronchery continue_reading = pkgconf_fgetline(&readbuf, f);
46*a3cefe7fSPierre Pronchery lineno++;
47*a3cefe7fSPierre Pronchery
48*a3cefe7fSPierre Pronchery p = readbuf.base;
49*a3cefe7fSPierre Pronchery if (p == NULL)
50*a3cefe7fSPierre Pronchery continue;
51*a3cefe7fSPierre Pronchery while (*p && isspace((unsigned char)*p))
52*a3cefe7fSPierre Pronchery p++;
53*a3cefe7fSPierre Pronchery if (*p && p != readbuf.base)
54*a3cefe7fSPierre Pronchery {
55*a3cefe7fSPierre Pronchery warnfunc(data, "%s:" SIZE_FMT_SPECIFIER ": warning: whitespace encountered while parsing key section\n",
56*a3cefe7fSPierre Pronchery filename, lineno);
57*a3cefe7fSPierre Pronchery warned_key_whitespace = true;
58*a3cefe7fSPierre Pronchery }
59*a3cefe7fSPierre Pronchery key = p;
60*a3cefe7fSPierre Pronchery while (*p && (isalpha((unsigned char)*p) || isdigit((unsigned char)*p) || *p == '_' || *p == '.'))
61*a3cefe7fSPierre Pronchery p++;
62*a3cefe7fSPierre Pronchery
63*a3cefe7fSPierre Pronchery if (!isalpha((unsigned char)*key) &&
64*a3cefe7fSPierre Pronchery !isdigit((unsigned char)*p))
65*a3cefe7fSPierre Pronchery {
66*a3cefe7fSPierre Pronchery pkgconf_buffer_reset(&readbuf);
67*a3cefe7fSPierre Pronchery continue;
68*a3cefe7fSPierre Pronchery }
69*a3cefe7fSPierre Pronchery
70*a3cefe7fSPierre Pronchery while (*p && isspace((unsigned char)*p))
71*a3cefe7fSPierre Pronchery {
72*a3cefe7fSPierre Pronchery if (!warned_key_whitespace)
73*a3cefe7fSPierre Pronchery {
74*a3cefe7fSPierre Pronchery warnfunc(data, "%s:" SIZE_FMT_SPECIFIER ": warning: whitespace encountered while parsing key section\n",
75*a3cefe7fSPierre Pronchery filename, lineno);
76*a3cefe7fSPierre Pronchery warned_key_whitespace = true;
77*a3cefe7fSPierre Pronchery }
78*a3cefe7fSPierre Pronchery
79*a3cefe7fSPierre Pronchery /* set to null to avoid trailing spaces in key */
80*a3cefe7fSPierre Pronchery *p = '\0';
81*a3cefe7fSPierre Pronchery p++;
82*a3cefe7fSPierre Pronchery }
83*a3cefe7fSPierre Pronchery
84*a3cefe7fSPierre Pronchery op = *p;
85*a3cefe7fSPierre Pronchery if (*p != '\0')
86*a3cefe7fSPierre Pronchery {
87*a3cefe7fSPierre Pronchery *p = '\0';
88*a3cefe7fSPierre Pronchery p++;
89*a3cefe7fSPierre Pronchery }
90*a3cefe7fSPierre Pronchery
91*a3cefe7fSPierre Pronchery while (*p && isspace((unsigned char)*p))
92*a3cefe7fSPierre Pronchery p++;
93*a3cefe7fSPierre Pronchery
94*a3cefe7fSPierre Pronchery value = p;
95*a3cefe7fSPierre Pronchery p = value + (strlen(value) - 1);
96*a3cefe7fSPierre Pronchery while (*p && isspace((unsigned char) *p) && p > value)
97*a3cefe7fSPierre Pronchery {
98*a3cefe7fSPierre Pronchery if (!warned_value_whitespace && op == '=')
99*a3cefe7fSPierre Pronchery {
100*a3cefe7fSPierre Pronchery warnfunc(data, "%s:" SIZE_FMT_SPECIFIER ": warning: trailing whitespace encountered while parsing value section\n",
101*a3cefe7fSPierre Pronchery filename, lineno);
102*a3cefe7fSPierre Pronchery warned_value_whitespace = true;
103*a3cefe7fSPierre Pronchery }
104*a3cefe7fSPierre Pronchery
105*a3cefe7fSPierre Pronchery *p = '\0';
106*a3cefe7fSPierre Pronchery p--;
107*a3cefe7fSPierre Pronchery }
108*a3cefe7fSPierre Pronchery if (ops[(unsigned char) op])
109*a3cefe7fSPierre Pronchery ops[(unsigned char) op](data, lineno, key, value);
110*a3cefe7fSPierre Pronchery
111*a3cefe7fSPierre Pronchery pkgconf_buffer_reset(&readbuf);
112*a3cefe7fSPierre Pronchery }
113*a3cefe7fSPierre Pronchery
114*a3cefe7fSPierre Pronchery pkgconf_buffer_finalize(&readbuf);
115*a3cefe7fSPierre Pronchery }
116