mirror of
https://github.com/pkgconf/pkgconf.git
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a1e09753bc
This will be used to overhaul the built-in package support by synthesizing a .pc file on the fly for built-ins. Ref: https://github.com/pkgconf/pkgconf/issues/418
101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
/*
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* parser.c
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* rfc822 message parser
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*
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* Copyright (c) 2018, 2025 pkgconf authors (see AUTHORS).
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* This software is provided 'as is' and without any warranty, express or
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* implied. In no event shall the authors be liable for any damages arising
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* from the use of this software.
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*/
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#include <libpkgconf/config.h>
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#include <libpkgconf/stdinc.h>
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#include <libpkgconf/libpkgconf.h>
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void
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pkgconf_parser_parse_buffer(void *data, const pkgconf_parser_operand_func_t *ops, const pkgconf_parser_warn_func_t warnfunc, pkgconf_buffer_t *buffer, const char *warnprefix)
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{
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char op, *p, *key, *value;
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p = buffer->base;
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if (p == NULL)
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return;
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while (*p && isspace((unsigned char)*p))
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p++;
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if (*p && p != buffer->base)
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{
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warnfunc(data, "%s: warning: whitespace encountered while parsing key section\n",
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warnprefix);
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}
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key = p;
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while (*p && (isalpha((unsigned char)*p) || isdigit((unsigned char)*p) || *p == '_' || *p == '.'))
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p++;
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if (!isalpha((unsigned char)*key) &&
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!isdigit((unsigned char)*p))
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return;
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while (*p && isspace((unsigned char)*p))
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{
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warnfunc(data, "%s: warning: whitespace encountered while parsing key section\n",
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warnprefix);
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/* set to null to avoid trailing spaces in key */
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*p = '\0';
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p++;
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}
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op = *p;
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if (*p != '\0')
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{
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*p = '\0';
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p++;
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}
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while (*p && isspace((unsigned char)*p))
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p++;
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value = p;
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p = value + (strlen(value) - 1);
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while (*p && isspace((unsigned char) *p) && p > value)
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{
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if (op == '=')
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{
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warnfunc(data, "%s: warning: trailing whitespace encountered while parsing value section\n",
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warnprefix);
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}
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*p = '\0';
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p--;
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}
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if (ops[(unsigned char) op])
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ops[(unsigned char) op](data, warnprefix, key, value);
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}
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void
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pkgconf_parser_parse(FILE *f, void *data, const pkgconf_parser_operand_func_t *ops, const pkgconf_parser_warn_func_t warnfunc, const char *filename)
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{
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pkgconf_buffer_t readbuf = PKGCONF_BUFFER_INITIALIZER;
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size_t lineno = 0;
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bool continue_reading = true;
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while (continue_reading)
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{
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char warnprefix[PKGCONF_ITEM_SIZE];
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continue_reading = pkgconf_fgetline(&readbuf, f);
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lineno++;
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snprintf(warnprefix, sizeof warnprefix, "%s:" SIZE_FMT_SPECIFIER, filename, lineno);
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pkgconf_parser_parse_buffer(data, ops, warnfunc, &readbuf, warnprefix);
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pkgconf_buffer_reset(&readbuf);
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}
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pkgconf_buffer_finalize(&readbuf);
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}
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