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  • Committer: Bazaar Package Importer
  • Author(s): Joel Rosdahl
  • Date: 2010-12-02 21:05:17 UTC
  • mfrom: (5.1.4 sid)
  • Revision ID: james.westby@ubuntu.com-20101202210517-ji5owl2qa3s5c1rg
New upstream version.

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compopt.c
 
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/*
 
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 * Copyright (C) 2010 Joel Rosdahl
 
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 *
 
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 * This program is free software; you can redistribute it and/or modify it
 
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 * under the terms of the GNU General Public License as published by the Free
 
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 * Software Foundation; either version 3 of the License, or (at your option)
 
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 * any later version.
 
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 *
 
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 * This program is distributed in the hope that it will be useful, but WITHOUT
 
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 
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 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 
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 * more details.
 
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 *
 
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 * You should have received a copy of the GNU General Public License along with
 
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 * this program; if not, write to the Free Software Foundation, Inc., 51
 
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 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
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 */
 
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#include "ccache.h"
 
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#include "compopt.h"
 
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#define TOO_HARD         (1 << 0)
 
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#define TOO_HARD_DIRECT  (1 << 1)
 
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#define TAKES_ARG        (1 << 2)
 
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#define TAKES_CONCAT_ARG (1 << 3)
 
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#define TAKES_PATH       (1 << 4)
 
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#define AFFECTS_CPP      (1 << 5)
 
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struct compopt {
 
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        const char *name;
 
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        int type;
 
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};
 
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static const struct compopt compopts[] = {
 
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        {"--coverage",      TOO_HARD},
 
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        {"--param",         TAKES_ARG},
 
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        {"-A",              TAKES_ARG},
 
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        {"-D",              AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG},
 
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        {"-E",              TOO_HARD},
 
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        {"-G",              TAKES_ARG},
 
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        {"-I",              AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG | TAKES_PATH},
 
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        {"-L",              TAKES_ARG},
 
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        {"-M",              TOO_HARD},
 
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        {"-MF",             TAKES_ARG},
 
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        {"-MM",             TOO_HARD},
 
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        {"-MQ",             TAKES_ARG},
 
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        {"-MT",             TAKES_ARG},
 
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        {"-U",              AFFECTS_CPP | TAKES_ARG | TAKES_CONCAT_ARG},
 
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        {"-V",              TAKES_ARG},
 
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        {"-Xassembler",     TAKES_ARG},
 
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        {"-Xlinker",        TAKES_ARG},
 
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        {"-Xpreprocessor",  TOO_HARD_DIRECT | TAKES_ARG},
 
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        {"-aux-info",       TAKES_ARG},
 
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        {"-b",              TAKES_ARG},
 
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        {"-fbranch-probabilities", TOO_HARD},
 
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        {"-fprofile-arcs",  TOO_HARD},
 
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        {"-fprofile-generate", TOO_HARD},
 
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        {"-fprofile-use",   TOO_HARD},
 
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        {"-frepo",          TOO_HARD},
 
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        {"-ftest-coverage", TOO_HARD},
 
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        {"-idirafter",      AFFECTS_CPP | TAKES_ARG | TAKES_PATH},
 
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        {"-imacros",        AFFECTS_CPP | TAKES_ARG | TAKES_PATH},
 
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        {"-imultilib",      AFFECTS_CPP | TAKES_ARG | TAKES_PATH},
 
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        {"-include",        AFFECTS_CPP | TAKES_ARG | TAKES_PATH},
 
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        {"-install_name",   TAKES_ARG}, /* Darwin linker option */
 
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        {"-iprefix",        AFFECTS_CPP | TAKES_ARG | TAKES_PATH},
 
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        {"-iquote",         AFFECTS_CPP | TAKES_ARG | TAKES_PATH},
 
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        {"-isysroot",       AFFECTS_CPP | TAKES_ARG | TAKES_PATH},
 
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        {"-isystem",        AFFECTS_CPP | TAKES_ARG | TAKES_PATH},
 
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        {"-iwithprefix",    AFFECTS_CPP | TAKES_ARG | TAKES_PATH},
 
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        {"-iwithprefixbefore", AFFECTS_CPP | TAKES_ARG | TAKES_PATH},
 
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        {"-nostdinc",       AFFECTS_CPP},
 
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        {"-nostdinc++",     AFFECTS_CPP},
 
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        {"-save-temps",     TOO_HARD},
 
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        {"-u",              TAKES_ARG},
 
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};
 
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static int
 
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compare_compopts(const void *key1, const void *key2)
 
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{
 
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        const struct compopt *opt1 = (const struct compopt *)key1;
 
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        const struct compopt *opt2 = (const struct compopt *)key2;
 
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        return strcmp(opt1->name, opt2->name);
 
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}
 
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static const struct compopt *
 
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find(const char *option)
 
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{
 
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        struct compopt key;
 
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        key.name = option;
 
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        return bsearch(
 
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                &key, compopts, sizeof(compopts) / sizeof(compopts[0]),
 
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                sizeof(compopts[0]), compare_compopts);
 
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}
 
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/* Runs fn on the first two characters of option. */
 
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bool
 
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compopt_short(bool (*fn)(const char *), const char *option)
 
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{
 
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        char *short_opt = x_strndup(option, 2);
 
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        bool retval = fn(short_opt);
 
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        free(short_opt);
 
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        return retval;
 
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}
 
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/* For test purposes. */
 
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bool
 
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compopt_verify_sortedness(void)
 
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{
 
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        size_t i;
 
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        for (i = 1; i < sizeof(compopts)/sizeof(compopts[0]); i++) {
 
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                if (strcmp(compopts[i-1].name, compopts[i].name) >= 0) {
 
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                        fprintf(stderr,
 
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                                "compopt_verify_sortedness: %s >= %s\n",
 
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                                compopts[i-1].name,
 
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                                compopts[i].name);
 
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                        return false;
 
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                }
 
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        }
 
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        return true;
 
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}
 
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bool
 
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compopt_affects_cpp(const char *option)
 
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{
 
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        const struct compopt *co = find(option);
 
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        return co && (co->type & AFFECTS_CPP);
 
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}
 
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bool
 
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compopt_too_hard(const char *option)
 
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{
 
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        const struct compopt *co = find(option);
 
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        return co && (co->type & TOO_HARD);
 
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}
 
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bool
 
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compopt_too_hard_for_direct_mode(const char *option)
 
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{
 
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        const struct compopt *co = find(option);
 
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        return co && (co->type & TOO_HARD_DIRECT);
 
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}
 
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bool
 
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compopt_takes_path(const char *option)
 
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{
 
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        const struct compopt *co = find(option);
 
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        return co && (co->type & TAKES_PATH);
 
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}
 
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bool
 
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compopt_takes_arg(const char *option)
 
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{
 
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        const struct compopt *co = find(option);
 
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        return co && (co->type & TAKES_ARG);
 
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}