#include "cmdline.h"

static Plugin *pluginlist;
static ToolVersionInfo toolVersionInfo;
static VersionInfo toolVersion;
static Boolean useToolVersion;

static void GetToolVersionInfo(void) {
    useToolVersion = 0;
}

const ToolVersionInfo *Plugin_GetToolVersionInfo(void) {
    return useToolVersion ? &toolVersionInfo : 0;
}

static const char *Plugin_GetDisplayName(Plugin *pl) {
    const char *name;
    OS_ASSERT(251, pl);

    if (pl->cb->GetDisplayName && pl->cb->GetDisplayName(&name) == 0)
        return name;
    else
        return "(no name found)";
}

const char *Plugin_GetDropInName(Plugin *pl) {
    const char *name;
    OS_ASSERT(263, pl);

    if (pl->cb->GetDropInName && pl->cb->GetDropInName(&name) == 0)
        return name;
    else
        return "(no name found)";
}

const VersionInfo *Plugin_GetVersionInfo(Plugin *pl) {
    static const VersionInfo fakeversion = {0, 0, 0, 0};
    const VersionInfo *vi;
    OS_ASSERT(276, pl);

    if (pl->cb->GetVersionInfo && pl->cb->GetVersionInfo(&vi) == 0)
        return vi;
    else
        return &fakeversion;
}

char *Plugin_GetVersionInfoASCII(Plugin *pl) {
    const VersionInfo *vi;
    char *buffer;
    char vernum[16];
    char *bptr;

    if (!pl && useToolVersion) {
        vi = &toolVersion;
    } else if (!pl) {
        return NULL;
    } else {
        vi = Plugin_GetVersionInfo(pl);
    }

    buffer = xmalloc("version info", 64);
    if (vi->major | vi->minor | vi->patch | vi->build != 0) {
        bptr = vernum;
        bptr += sprintf(bptr, "%u", vi->major);
        bptr += sprintf(bptr, ".%u", vi->minor);
        if (vi->patch)
            bptr += sprintf(bptr, ".%u", vi->patch);
        if (vi->build)
            bptr += sprintf(bptr, " build %u", vi->build);
        sprintf(buffer, "Version %s", vernum);
        return buffer;
    } else {
        return NULL;
    }
}

DropInFlags *Plugin_GetDropInFlags(Plugin *pl) {
    static DropInFlags retdf;
    const DropInFlags *df;
    SInt32 dfsize;

    OS_ASSERT(329, pl);

    if (pl->cb->GetDropInFlags && pl->cb->GetDropInFlags(&df, &dfsize) == 0) {
        memset(&retdf, 0, sizeof(retdf));
        memcpy(&retdf, df, dfsize);
        return &retdf;
    } else {
        return NULL;
    }
}

OSType Plugin_GetPluginType(Plugin *pl) {
    DropInFlags *df;

    OS_ASSERT(345, pl);

    df = Plugin_GetDropInFlags(pl);
    if (df)
        return df->dropintype;
    else
        return CWFOURCHAR('N','O','N','E');
}

const CWTargetList *Plugin_CL_GetTargetList(Plugin *pl) {
    static const CWTargetList faketl = {
            kCurrentCWTargetListVersion,
            0, NULL,
            0, NULL
    };
    const CWTargetList *tl;

    OS_ASSERT(358, pl);
    OS_ASSERT(359, pl->cl_cb != NULL);

    if (pl->cl_cb->GetTargetList && pl->cl_cb->GetTargetList(&tl) == 0)
        return tl;
    else
        return &faketl;
}

const CWPanelList *Plugin_GetPanelList(Plugin *pl) {
    static CWPanelList fakepnl = {
            kCurrentCWPanelListVersion, 0, NULL
    };
    const CWPanelList *pnl;

    OS_ASSERT(381, pl);

    if (pl->cb->GetPanelList && pl->cb->GetPanelList(&pnl) == 0)
        return pnl;
    else
        return &fakepnl;
}

const CWExtMapList *Plugin_CL_GetExtMapList(Plugin *pl) {
    static CWExtMapList fakeel = {
            kCurrentCWExtMapListVersion,
            0, NULL
    };
    const CWExtMapList *el;

    OS_ASSERT(401, pl);
    OS_ASSERT(402, pl->cl_cb != NULL);

    if (pl->cl_cb->GetDefaultMappingList && pl->cl_cb->GetDefaultMappingList(&el) == 0)
        return el;
    else
        return &fakeel;
}

const OSFileTypeMappingList *Plugin_GetFileTypeMappingList(Plugin *pl) {
    const OSFileTypeMappingList *ftml;

    OS_ASSERT(422, pl);

    if (pl->cb->GetFileTypeMappings && pl->cb->GetFileTypeMappings(&ftml) == 0)
        return ftml;
    else
        return NULL;
}

const CWObjectFlags *Plugin_CL_GetObjectFlags(Plugin *pl) {
    static const CWObjectFlags fake = {
            2, 0,
            "", "", "", "", "", "",
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0
    };
    const CWObjectFlags *cof;

    OS_ASSERT(434, pl);
    OS_ASSERT(435, pl->cl_cb != NULL);

    if (pl->cl_cb->GetObjectFlags && pl->cl_cb->GetObjectFlags(&cof) == 0)
        return cof;
    else if (Plugin_GetDropInFlags(pl)->dropintype == CWDROPINCOMPILERTYPE)
        return NULL;
    else
        return &fake;
}

Boolean Plugin_MatchesName(Plugin *pl, const char *name) {
    const char *pname = Plugin_GetDropInName(pl);
    return !strcmp(pname, name);
}

Boolean Plugin_CL_MatchesTarget(Plugin *pl, OSType cpu, OSType os, Boolean exact) {
    const CWTargetList *tl;
    int idx;
    int ix;

    tl = Plugin_CL_GetTargetList(pl);

    for (idx = 0; idx < tl->cpuCount; idx++) {
        if (cpu == targetCPUAny || cpu == tl->cpus[idx] || (tl->cpus[idx] == targetCPUAny && !exact)) {
            for (ix = 0; ix < tl->osCount; ix++) {
                if (os == targetOSAny || os == tl->oss[ix] || (tl->oss[ix] == targetOSAny && !exact))
                    return 1;
            }
        }
    }

    return 0;
}

Boolean Plugins_CL_HaveMatchingTargets(Plugin *p1, Plugin *p2, Boolean exact) {
    // does not match, annoyingly
    const CWTargetList *t1;
    const CWTargetList *t2;
    int ic1;
    int ic2;
    int io1;
    int io2;

    t1 = Plugin_CL_GetTargetList(p1);
    t2 = Plugin_CL_GetTargetList(p2);

    for (ic1 = 0; ic1 < t1->cpuCount; ic1++) {
        for (ic2 = 0; ic2 < t2->cpuCount; ic2++) {
            if ((t2->cpus[ic2] == targetCPUAny && !exact) || (t1->cpus[ic1] == t2->cpus[ic2]) || (t1->cpus[ic1] == targetCPUAny && !exact)) {
                for (io1 = 0; io1 < t1->osCount; io1++) {
                    for (io2 = 0; io2 < t2->osCount; io2++) {
                        if ((t2->oss[io2] == targetOSAny && !exact) || (t1->oss[io1] == t2->oss[io2]) || (t1->oss[io1] == targetOSAny && !exact)) {
                            return 1;
                        }
                    }
                }
            }
        }
    }

    return 0;
}

static Boolean CL_MatchesExtMapping(CWExtensionMapping *map, OSType type, const char *ext, Boolean exact) {
    if (exact && type && map->type && type == map->type)
        return 1;

    if (
            (((!map->extension[0] && !exact) || (!ext[0] && !exact)) && map->type == type)
            ||
            (((!map->type && !exact) || (!type && !exact)) && !ustrcmp(map->extension, ext))
            ||
            (!ustrcmp(map->extension, ext) && map->type == type)
            ) {
        return 1;
    }

    return 0;
}

Boolean Plugin_CL_MatchesFileType(Plugin *pl, OSType type, const char *extension, Boolean exact) {
    const CWExtMapList *el;
    int idx;

    el = Plugin_CL_GetExtMapList(pl);

    for (idx = 0; idx < el->nMappings; idx++) {
        if (CL_MatchesExtMapping(&el->mappings[idx], type, extension, exact))
            return 1;
    }

    return 0;
}

Boolean Plugin_MatchesType(Plugin *pl, OSType type, OSType lang, Boolean exact) {
    const DropInFlags *df;

    df = Plugin_GetDropInFlags(pl);
    if (df->dropintype == type || type == CWDROPINANYTYPE) {
        if (df->edit_language == lang || lang == Lang_Any || (df->edit_language == Lang_Any && !exact))
            return 1;
    }

    return 0;
}

Boolean Plugin_Pr_MatchesPlugin(Plugin *pl, CLPluginInfo *pluginfo, OSType cpu, OSType os) {
    Boolean isSupported;

    OS_ASSERT(566, pl->pr_cb != NULL);

    if (pl->pr_cb->SupportsPlugin && pl->pr_cb->SupportsPlugin(pluginfo, cpu, os, &isSupported) == 0)
        return isSupported;
    else
        return 0;
}

Boolean Plugin_Pr_MatchesPanels(Plugin *pl, int numPanels, const char **panelNames) {
    Boolean isSupported;

    OS_ASSERT(578, pl->pr_cb != NULL);

    if (pl->pr_cb->SupportsPanels && pl->pr_cb->SupportsPanels(numPanels, panelNames, &isSupported) == 0)
        return isSupported;
    else
        return 0;
}

Boolean Plugin_CL_WriteObjectFile(Plugin *pl, FSSpec *srcfss, FSSpec *outfss, OSType creator, OSType type, Handle data) {
    OSSpec outoss;

    OS_ASSERT(590, pl->cl_cb != NULL);
    OS_ASSERT(591, data != NULL && srcfss != NULL && outfss != NULL);

    if (pl->cl_cb->WriteObjectFile) {
        return pl->cl_cb->WriteObjectFile(srcfss, outfss, creator, type, data) == 0;
    }

    OS_FSSpec_To_OSSpec(outfss, &outoss);
    return WriteBinaryHandleToFile(&outoss, creator, type, OS_PeekMacHandle(data));
}

Boolean Plugin_CL_GetCompilerMapping(Plugin *pl, OSType type, const char *ext, UInt32 *flags) {
    const CWExtMapList *el;
    int idx;
    int pick;

    el = Plugin_CL_GetExtMapList(pl);
    pick = -1;
    for (idx = 0; idx < el->nMappings; idx++) {
        if (CL_MatchesExtMapping(&el->mappings[idx], type, ext, 0)) {
            pick = idx;
            if (CL_MatchesExtMapping(&el->mappings[idx], type, ext, 1))
                break;
        }
    }

    if (pick < 0) {
        *flags = 0;
        return 0;
    } else {
        *flags = el->mappings[pick].flags;
        return 1;
    }
}

static Boolean SupportedPlugin(Plugin *pl, const char **reason) {
    static const SInt32 DropInFlagsSize[3] = {0, sizeof(DropInFlagsV1), sizeof(DropInFlags)};
    const DropInFlags *df;
    const CWObjectFlags *cof;
    SInt32 dfsize;

    *reason = "";
    if (pl->cb->GetDropInFlags == NULL) {
        *reason = "GetDropInFlags callback not found";
        return 0;
    }
    if (pl->cb->GetDropInFlags(&df, &dfsize)) {
        *reason = "GetDropInFlags callback failed";
        return 0;
    }
    if (df->dropintype != CWDROPINCOMPILERTYPE && df->dropintype != CWDROPINLINKERTYPE && df->dropintype != CWDROPINPARSERTYPE && df->dropintype != CWDROPINDRIVERTYPE) {
        *reason = "The plugin type is not supported by this driver";
        return 0;
    }
    if (df->earliestCompatibleAPIVersion > 11) {
        *reason = "The plugin's earliest compatible API version is too new for this driver";
        return 0;
    }
    if (df->earliestCompatibleAPIVersion > 1 && df->newestAPIVersion < 11 && clState.pluginDebug) {
        CLPrintErr("%s's newest compatible API version is probably too old for this driver\n", Plugin_GetDropInName(pl));
    }
    if (dfsize != DropInFlagsSize[df->rsrcversion]) {
        *reason = "The plugin's DropInFlags has an unexpected size";
        return 0;
    }
    if (!(df->dropinflags & dropInExecutableTool) && !pl->cb->main) {
        *reason = "The plugin has no entry point";
        return 0;
    }
    if ((df->dropinflags & dropInExecutableTool) && pl->cb->main) {
        *reason = "The executable tool stub has an entry point";
        return 0;
    }

    if (pl->cl_cb) {
        if (pl->cl_cb->GetObjectFlags == NULL && df->dropintype == CWDROPINCOMPILERTYPE) {
            *reason = "GetObjectFlags callback not found in compiler plugin";
            return 0;
        }

        cof = Plugin_CL_GetObjectFlags(pl);
        if (cof->version < 2 || cof->flags & 0x7FFFFFFF) {
            *reason = "The object flags data is out-of-date or invalid";
            return 0;
        }
    }

    return 1;
}

static Boolean VerifyPanels(Plugin *pl) {
    const CWPanelList *pls;
    Boolean failed;
    int idx;

    failed = 0;

    if (pl->cb->GetPanelList && pl->cb->GetPanelList(&pls) == 0) {
        for (idx = 0; idx < pls->count; idx++) {
            if (Prefs_FindPanel(pls->names[idx]) == NULL) {
                CLReportError(CLStr91, pls->names[idx]);
                failed = 1;
            }
        }
    }

    return !failed;
}

Plugin *Plugin_New(const BasePluginCallbacks *cb, const CompilerLinkerPluginCallbacks *cl_cb, const ParserPluginCallbacks *pr_cb) {
    Plugin *p;

    p = xmalloc(NULL, sizeof(Plugin));
    if (!p)
        return NULL;
    if (!cb)
        return NULL;

    p->cb = xmalloc(NULL, sizeof(BasePluginCallbacks));
    if (!p->cb)
        return NULL;
    *p->cb = *cb;

    if (cl_cb) {
        p->cl_cb = xmalloc(NULL, sizeof(CompilerLinkerPluginCallbacks));
        if (!p->cl_cb)
            return NULL;
        *p->cl_cb = *cl_cb;
    } else {
        p->cl_cb = NULL;
    }

    if (pr_cb) {
        p->pr_cb = xmalloc(NULL, sizeof(ParserPluginCallbacks));
        if (!p->pr_cb)
            return NULL;
        *p->pr_cb = *pr_cb;
    } else {
        p->pr_cb = NULL;
    }

    p->context = NULL;
    p->next = NULL;
    return p;
}

void Plugin_Free(Plugin *pl) {
    if (pl) {
        if (pl->cb)
            xfree(pl->cb);
        if (pl->cl_cb)
            xfree(pl->cl_cb);
        if (pl->pr_cb)
            xfree(pl->pr_cb);
        xfree(pl);
    }
}

Boolean Plugin_VerifyPanels(Plugin *pl) {
    if (!VerifyPanels(pl)) {
        CLReportError(CLStr92, Plugin_GetDropInName(pl));
        return 0;
    } else {
        return 1;
    }
}

void Plugins_Init(void) {
    pluginlist = NULL;
    GetToolVersionInfo();
}

void Plugins_Term(void) {
    Plugin *scan;
    Plugin *next;

    scan = pluginlist;
    while (scan) {
        next = scan->next;
        SendInitOrTermRequest(scan, 0);
        Plugin_Free(scan);
        scan = next;
    }

    if (toolVersionInfo.company)
        xfree(toolVersionInfo.company);
    if (toolVersionInfo.product)
        xfree(toolVersionInfo.product);
    if (toolVersionInfo.tool)
        xfree(toolVersionInfo.tool);
    if (toolVersionInfo.copyright)
        xfree(toolVersionInfo.copyright);
    if (toolVersionInfo.version)
        xfree(toolVersionInfo.version);
}

int Plugins_Add(Plugin *pl) {
    Plugin **scan;
    const char *dropinname;
    const DropInFlags *df;
    const CWTargetList *tl;
    const CWExtMapList *el;
    const CWPanelList *pnl;
    const char *failreason;
    CWDataType vislang;
    SInt16 step;

    dropinname = Plugin_GetDropInName(pl);
    pl->cached_ascii_version = Plugin_GetVersionInfoASCII(pl);

    if (!SupportedPlugin(pl, &failreason)) {
        CLReportError(CLStr88, dropinname, pl->cached_ascii_version, failreason);
        return 0;
    }

    scan = &pluginlist;
    while (*scan) {
        if (Plugin_MatchesName(*scan, dropinname)) {
            CLReportError(CLStr89, dropinname);
            return 0;
        }
        scan = &(*scan)->next;
    }

    *scan = pl;

    df = Plugin_GetDropInFlags(pl);
    if (!(df->dropinflags & dropInExecutableTool) && !SendInitOrTermRequest(pl, 1)) {
        CLReportError(CLStr3, dropinname);
        return 0;
    }

    if (df->dropintype == CWDROPINCOMPILERTYPE && df->dropinflags & 0x17C000)
        CLReportError(CLStr4, "compiler", dropinname);
    if (df->dropintype == CWDROPINLINKERTYPE && df->dropinflags & 0x5FE4000)
        CLReportError(CLStr4, "linker", dropinname);

    if (clState.pluginDebug) {
        vislang = df->edit_language ? df->edit_language : CWFOURCHAR('-','-','-','-');
        CLPrint("Added plugin '%s', version '%s'\n", dropinname, pl->cached_ascii_version);
        CLPrint("Type: '%c%c%c%c';  Lang: '%c%c%c%c';  API range: %d-%d\n",
                (df->dropintype & 0xFF000000) >> 24,
                (df->dropintype & 0x00FF0000) >> 16,
                (df->dropintype & 0x0000FF00) >> 8,
                (df->dropintype & 0x000000FF),
                (vislang & 0xFF000000) >> 24,
                (vislang & 0x00FF0000) >> 16,
                (vislang & 0x0000FF00) >> 8,
                (vislang & 0x000000FF),
                df->earliestCompatibleAPIVersion,
                df->newestAPIVersion
                );

        if (pl->cl_cb) {
            tl = Plugin_CL_GetTargetList(pl);
            CLPrint("Target CPUs: ");
            for (step = 0; step < tl->cpuCount; step++) {
                CLPrint("'%c%c%c%c', ",
                        (tl->cpus[step] & 0xFF000000) >> 24,
                        (tl->cpus[step] & 0x00FF0000) >> 16,
                        (tl->cpus[step] & 0x0000FF00) >> 8,
                        (tl->cpus[step] & 0x000000FF)
                );
            }
            CLPrint("\nTarget OSes: ");
            for (step = 0; step < tl->osCount; step++) {
                CLPrint("'%c%c%c%c', ",
                        (tl->oss[step] & 0xFF000000) >> 24,
                        (tl->oss[step] & 0x00FF0000) >> 16,
                        (tl->oss[step] & 0x0000FF00) >> 8,
                        (tl->oss[step] & 0x000000FF)
                );
            }
            CLPrint("\n");

            el = Plugin_CL_GetExtMapList(pl);
            CLPrint("File mappings:\n");
            for (step = 0; step < el->nMappings; step++) {
                if (el->mappings[step].type) {
                    CLPrint("\tFile type: '%c%c%c%c'  Extension: '%s'\n",
                            (el->mappings[step].type & 0xFF000000) >> 24,
                            (el->mappings[step].type & 0x00FF0000) >> 16,
                            (el->mappings[step].type & 0x0000FF00) >> 8,
                            (el->mappings[step].type & 0x000000FF),
                            el->mappings[step].extension
                    );
                } else {
                    CLPrint("\tFile type: <none>  Extension: '%s'\n",
                            el->mappings[step].extension
                    );
                }
            }
        }

        pnl = Plugin_GetPanelList(pl);
        CLPrint("Pref panels needed:\n");
        for (step = 0; step < pnl->count; step++) {
            CLPrint("\t'%s'\n", pnl->names[step]);
        }

        CLPrint("Dropin flags:\n");
        if (df->dropinflags & dropInExecutableTool) CLPrint("\texecutable tool,\n");
        if (df->dropintype == CWDROPINCOMPILERTYPE) {
            if (df->dropinflags & kGeneratescode) CLPrint("\tgenerates code,\n");
            if (df->dropinflags & kGeneratesrsrcs) CLPrint("\tgenerates resources, \n");
            if (df->dropinflags & kCanpreprocess) CLPrint("\tcan preprocess, \n");
            if (df->dropinflags & kCanprecompile) CLPrint("\tcan precompile, \n");
            if (df->dropinflags & kIspascal) CLPrint("\tis Pascal, \n");
            if (df->dropinflags & kCanimport) CLPrint("\tcan import, \n");
            if (df->dropinflags & kCandisassemble) CLPrint("\tcan disassemble, \n");
            if (df->dropinflags & kCompAllowDupFileNames) CLPrint("\tallow duplicate filenames, \n");
            if (df->dropinflags & kCompMultiTargAware) CLPrint("\tallow multiple targets, \n");
            if (df->dropinflags & kCompUsesTargetStorage) CLPrint("\tuses target storage, \n");
            if (df->dropinflags & kCompEmitsOwnBrSymbols) CLPrint("\temits own browser symbols, \n");
            if (df->dropinflags & kCompAlwaysReload) CLPrint("\tshould be always reloaded, \n");
            if (df->dropinflags & kCompRequiresProjectBuildStartedMsg) CLPrint("\trequires project build started msg, \n");
            if (df->dropinflags & kCompRequiresTargetBuildStartedMsg) CLPrint("\trequires target build started msg, \n");
            if (df->dropinflags & kCompRequiresSubProjectBuildStartedMsg) CLPrint("\trequires subproject build started msg, \n");
            if (df->dropinflags & kCompRequiresFileListBuildStartedMsg) CLPrint("\trequires file list build started msg, \n");
        }

        if (df->dropintype == CWDROPINLINKERTYPE) {
            if (df->dropinflags & cantDisassemble) CLPrint("\tcan't disassemble, \n");
            if (df->dropinflags & isPostLinker) CLPrint("\tis a post-linker, \n");
            if (df->dropinflags & linkAllowDupFileNames) CLPrint("\tallow duplicate filenames, \n");
            if (df->dropinflags & linkMultiTargAware) CLPrint("\tallow multiple targets, \n");
            if (df->dropinflags & isPreLinker) CLPrint("\tis a pre-linker, \n");
            if (df->dropinflags & linkerUsesTargetStorage) CLPrint("\tuses target storage, \n");
            if (df->dropinflags & linkerUnmangles) CLPrint("\tsupports unmangling, \n");
            if (df->dropinflags & magicCapLinker) CLPrint("\tis Magic Cap linker, \n");
            if (df->dropinflags & linkAlwaysReload) CLPrint("\tshould be always reloaded, \n");
            if (df->dropinflags & linkRequiresProjectBuildStartedMsg) CLPrint("\trequires project build started msg, \n");
            if (df->dropinflags & linkRequiresTargetBuildStartedMsg) CLPrint("\trequires target build started msg, \n");
            if (df->dropinflags & linkRequiresSubProjectBuildStartedMsg) CLPrint("\trequires subproject build started msg, \n");
            if (df->dropinflags & linkRequiresFileListBuildStartedMsg) CLPrint("\trequires file list build started msg, \n");
            if (df->dropinflags & linkRequiresTargetLinkStartedMsg) CLPrint("\trequires target link started msg, \n");
            if (df->dropinflags & linkerWantsPreRunRequest) CLPrint("\twants pre-run request, \n");
        }

        CLPrint("\n");
    }

    return 1;
}

Plugin *Plugins_MatchName(Plugin *list, const char *name) {
    Plugin *scan;

    scan = list ? list : pluginlist;
    while (scan) {
        if (Plugin_MatchesName(scan, name))
            break;
        scan = scan->next;
    }

    return scan;
}

Plugin *Plugins_CL_MatchTarget(Plugin *list, OSType cpu, OSType os, OSType type, OSType lang) {
    Plugin *scan;
    Plugin *pick;

    scan = list ? list : pluginlist;
    pick = NULL;
    while (scan) {
        if (scan->cl_cb) {
            if (Plugin_CL_MatchesTarget(scan, cpu, os, 0) && Plugin_MatchesType(scan, type, lang, 0)) {
                pick = scan;
                if (Plugin_CL_MatchesTarget(scan, cpu, os, 1) && Plugin_MatchesType(scan, type, lang, 1))
                    break;
            }
        }
        scan = scan->next;
    }

    return pick;
}

Plugin *Plugins_CL_MatchFileType(Plugin *list, OSType type, const char *ext, Boolean exact) {
    Plugin *scan;

    scan = list ? list : pluginlist;
    while (scan) {
        if (Plugin_CL_MatchesFileType(scan, type, ext, exact))
            break;
        scan = scan->next;
    }

    return scan;
}

Plugin *Plugins_GetPluginForFile(Plugin *list, OSType plugintype, OSType cpu, OSType os, OSType type, const char *ext, OSType lang) {
    Plugin *scan;
    Plugin *pick;

    scan = list ? list : pluginlist;
    pick = NULL;
    while (scan) {
        if (Plugin_MatchesType(scan, plugintype, lang, 1) && scan->cl_cb) {
            if (Plugin_CL_MatchesTarget(scan, cpu, os, 0) && Plugin_CL_MatchesFileType(scan, type, ext, 0)) {
                pick = scan;
                if (Plugin_CL_MatchesTarget(scan, cpu, os, 1) && Plugin_CL_MatchesFileType(scan, type, ext, 1))
                    break;
            }
        }
        scan = scan->next;
    }

    return pick;
}

Plugin *Plugins_GetLinker(Plugin *list, OSType cpu, OSType os) {
    Plugin *scan;
    Plugin *pick;

    scan = list ? list : pluginlist;
    pick = NULL;
    while (scan) {
        if (Plugin_MatchesType(scan, CWDROPINLINKERTYPE, Lang_Any, 1)) {
            if (!(Plugin_GetDropInFlags(scan)->dropinflags & (isPreLinker | isPostLinker))) {
                if (Plugin_CL_MatchesTarget(scan, cpu, os, 0)) {
                    pick = scan;
                    if (Plugin_CL_MatchesTarget(scan, cpu, os, 1))
                        break;
                }
            }
        }
        scan = scan->next;
    }

    return pick;
}

Plugin *Plugins_GetPreLinker(Plugin *list, OSType cpu, OSType os) {
    Plugin *scan;
    Plugin *pick;

    scan = list ? list : pluginlist;
    pick = NULL;
    while (scan) {
        if (Plugin_MatchesType(scan, CWDROPINLINKERTYPE, Lang_Any, 1)) {
            if (Plugin_GetDropInFlags(scan)->dropinflags & isPreLinker) {
                if (Plugin_CL_MatchesTarget(scan, cpu, os, 0)) {
                    pick = scan;
                    if (Plugin_CL_MatchesTarget(scan, cpu, os, 1))
                        break;
                }
            }
        }
        scan = scan->next;
    }

    return pick;
}

Plugin *Plugins_GetPostLinker(Plugin *list, OSType cpu, OSType os) {
    Plugin *scan;
    Plugin *pick;

    scan = list ? list : pluginlist;
    pick = NULL;
    while (scan) {
        if (Plugin_MatchesType(scan, CWDROPINLINKERTYPE, Lang_Any, 1)) {
            if (Plugin_GetDropInFlags(scan)->dropinflags & isPostLinker) {
                if (Plugin_CL_MatchesTarget(scan, cpu, os, 0)) {
                    pick = scan;
                    if (Plugin_CL_MatchesTarget(scan, cpu, os, 1))
                        break;
                }
            }
        }
        scan = scan->next;
    }

    return pick;
}

Plugin *Plugins_GetParserForPlugin(Plugin *list, OSType style, int numPlugins, CLPluginInfo *plugins, OSType cpu, OSType os, int numPanels, const char **panelNames) {
    Plugin *scan;
    Plugin *pick;
    Boolean allpanels;
    Boolean hasplugintype;
    Boolean *supports;

    scan = list ? list : pluginlist;
    pick = NULL;
    supports = alloca(numPanels);

    while (scan) {
        if (Plugin_MatchesType(scan, CWDROPINPARSERTYPE, style, 1)) {
            int idx;
            int pnl;
            hasplugintype = 0;
            for (idx = 0; idx < numPlugins; idx++) {
                if (plugins[idx].plugintype != CWDROPINPARSERTYPE && plugins[idx].plugintype != CWDROPINDRIVERTYPE && !plugins[idx].storeCommandLine) {
                    if (Plugin_Pr_MatchesPlugin(scan, &plugins[idx], cpu, os))
                        hasplugintype = 1;
                }
            }

            if (hasplugintype) {
                pick = scan;
                allpanels = 1;
                for (pnl = 0; pnl < numPanels; pnl++) {
                    allpanels &= (supports[pnl] = Plugin_Pr_MatchesPanels(scan, 1, &panelNames[pnl]));
                }

                if (allpanels)
                    break;
            }
        }
        scan = scan->next;
    }

    if (pick && !allpanels) {
        int idx;
        CLReport(CLStr5);

        for (idx = 0; idx < numPanels; idx++) {
            if (!supports[idx])
                CLReport(CLStr6, panelNames[idx]);
        }
    }

    return pick;
}

Plugin *Plugins_GetCompilerForLinker(Plugin *list, Plugin *linker, OSType type, const char *ext, OSType edit) {
    Plugin *scan;
    Plugin *pick;

    scan = list ? list : pluginlist;
    pick = NULL;

    while (scan) {
        if (Plugin_MatchesType(scan, CWDROPINCOMPILERTYPE, edit, 1)) {
            if (Plugin_CL_MatchesFileType(scan, type, ext, 0) && Plugins_CL_HaveMatchingTargets(scan, linker, 0)) {
                pick = scan;
                if (Plugin_CL_MatchesFileType(scan, type, ext, 1) && Plugins_CL_HaveMatchingTargets(scan, linker, 1))
                    break;
            }
        }
        scan = scan->next;
    }

    return pick;
}

int Plugins_GetPluginList(Plugin *list, int *numPlugins, CLPluginInfo **pluginInfo) {
    Plugin *scan;
    int idx;
    const DropInFlags *df;
    const VersionInfo *vi;

    scan = list ? list : pluginlist;
    idx = 0;
    while (scan) {
        scan = scan->next;
        idx++;
    }

    *numPlugins = idx;
    *pluginInfo = xmalloc(NULL, sizeof(CLPluginInfo) * idx);
    if (!*pluginInfo)
        return 0;

    scan = list ? list : pluginlist;
    idx = 0;
    while (scan) {
        df = Plugin_GetDropInFlags(scan);
        vi = Plugin_GetVersionInfo(scan);
        OS_ASSERT(1270, df != NULL);
        OS_ASSERT(1271, vi != NULL);
        (*pluginInfo)[idx].plugintype = df->dropintype;
        (*pluginInfo)[idx].language = df->edit_language;
        (*pluginInfo)[idx].dropinflags = df->dropinflags;
        (*pluginInfo)[idx].version = scan->cached_ascii_version;
        (*pluginInfo)[idx].storeCommandLine = df->dropinflags & 1;
        scan = scan->next;
        idx++;
    }

    return 1;
}

int Plugins_GetPrefPanelUnion(Plugin *list, int *numPanels, const char ***panelNames) {
    Plugin *scan;
    int tempNum;
    int idx;
    const char **tempPanels;

    scan = list ? list : pluginlist;

    tempNum = 0;
    while (scan) {
        const CWPanelList *pl;
        pl = Plugin_GetPanelList(scan);
        tempNum += pl->count;
        scan = scan->next;
    }

    tempPanels = xmalloc("plugin preference union", sizeof(const char *) * tempNum);

    idx = 0;
    scan = list ? list : pluginlist;
    while (scan) {
        const CWPanelList *pl;
        int step;

        pl = Plugin_GetPanelList(scan);
        for (step = 0; step < pl->count; step++) {
            int cmp;
            for (cmp = 0; cmp < idx; cmp++) {
                if (!ustrcmp(tempPanels[cmp], pl->names[step]))
                    break;
            }

            if (cmp >= idx)
                tempPanels[idx++] = pl->names[step];
        }

        scan = scan->next;
    }

    *panelNames = xmalloc(NULL, idx * sizeof(const char *));
    if (!*panelNames)
        return 0;

    *panelNames = xrealloc("plugin preference union", tempPanels, idx * sizeof(const char *));
    *numPanels = idx;
    return 1;
}

int Plugin_AddFileTypeMappings(Plugin *pl, OSFileTypeMappings **mlist) {
    const OSFileTypeMappingList *ftml;

    ftml = Plugin_GetFileTypeMappingList(pl);
    if (!ftml) {
        return 1;
    } else {
        AddFileTypeMappingList(NULL, ftml);
        return 1;
    }
}

int Plugins_AddFileTypeMappingsForTarget(Plugin *list, OSFileTypeMappings **mlist, OSType cpu, OSType os) {
    if (!list)
        list = pluginlist;

    while (list) {
        if (!list->cl_cb || Plugin_CL_MatchesTarget(list, cpu, os, 0))
            Plugin_AddFileTypeMappings(list, mlist);
        list = list->next;
    }

    return 1;
}

SInt16 Plugin_Call(Plugin *pl, void *context) {
    if (pl->cb->main)
        return pl->cb->main(context);
    else
        return cwErrRequestFailed;
}