This commit was manufactured by cvs2svn to create branch 'ruby_1_8'.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@8948 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 507 insertions, 0 deletions

diff --git a/ext/tk/stubs.c b/ext/tk/stubs.c
new file mode 100644
index 0000000000..050333cf63
--- /dev/null
+++ b/ext/tk/stubs.c
@@ -0,0 +1,507 @@
+#include "stubs.h"
+#include "ruby.h"
+#include <tcl.h>
+#include <tk.h>
+
+/*------------------------------*/
+
+#ifdef __MACOS__
+# include <tkMac.h>
+# include <Quickdraw.h>
+
+static int call_macinit = 0;
+
+static void
+_macinit()
+{
+    if (!call_macinit) {
+        tcl_macQdPtr = &qd; /* setup QuickDraw globals */
+        Tcl_MacSetEventProc(TkMacConvertEvent); /* setup event handler */
+        call_macinit = 1;
+    }
+}
+#endif
+
+/*------------------------------*/
+
+static int nativethread_checked = 0;
+
+static void
+_nativethread_consistency_check(ip)
+    Tcl_Interp *ip;
+{
+    if (nativethread_checked || ip == (Tcl_Interp *)NULL) {
+        return;
+    }
+
+    if (Tcl_Eval(ip, "set ::tcl_platform(threaded)") == TCL_OK) {
+#ifdef HAVE_NATIVETHREAD
+        /* consistent */
+#else
+        rb_warn("Inconsistency. Loaded Tcl/Tk libraries are enabled nativethread-support. But `tcltklib' is not. The inconsistency causes SEGV or other troubles frequently.");
+#endif
+    } else {
+#ifdef HAVE_NATIVETHREAD
+        rb_warning("Inconsistency.`tcltklib' is enabled nativethread-support. But loaded Tcl/Tk libraries are not. (Probably, the inconsistency doesn't cause any troubles.)");
+#else
+        /* consistent */
+#endif
+    }
+
+    Tcl_ResetResult(ip);
+
+    nativethread_checked = 1;
+}
+
+/*------------------------------*/
+
+#if defined USE_TCL_STUBS && defined USE_TK_STUBS
+
+#if defined _WIN32 || defined __CYGWIN__
+# include "util.h"
+# include <windows.h>
+  typedef HINSTANCE DL_HANDLE;
+# define DL_OPEN LoadLibrary
+# define DL_SYM GetProcAddress
+# define TCL_INDEX 4
+# define TK_INDEX 3
+# define TCL_NAME "tcl89%s"
+# define TK_NAME "tk89%s"
+# undef DLEXT
+# define DLEXT ".dll"
+#elif defined HAVE_DLOPEN
+# include <dlfcn.h>
+  typedef void *DL_HANDLE;
+# define DL_OPEN(file) dlopen(file, RTLD_LAZY|RTLD_GLOBAL)
+# define DL_SYM dlsym
+# define TCL_INDEX 8
+# define TK_INDEX 7
+# define TCL_NAME "libtcl8.9%s"
+# define TK_NAME "libtk8.9%s"
+#endif
+
+static DL_HANDLE tcl_dll = (DL_HANDLE)0;
+static DL_HANDLE tk_dll  = (DL_HANDLE)0;
+
+int
+ruby_open_tcl_dll(appname)
+    char *appname;
+{
+    void (*p_Tcl_FindExecutable)(const char *);
+    int n;
+    char *ruby_tcl_dll = 0;
+    char tcl_name[20];
+
+    if (tcl_dll) return TCLTK_STUBS_OK;
+
+    ruby_tcl_dll = getenv("RUBY_TCL_DLL");
+#if defined _WIN32
+    if (ruby_tcl_dll) ruby_tcl_dll = ruby_strdup(ruby_tcl_dll);
+#endif
+    if (ruby_tcl_dll) {
+        tcl_dll = (DL_HANDLE)DL_OPEN(ruby_tcl_dll);
+    } else {
+        snprintf(tcl_name, sizeof tcl_name, TCL_NAME, DLEXT);
+        /* examine from 8.9 to 8.1 */
+        for (n = '9'; n > '0'; n--) {
+            tcl_name[TCL_INDEX] = n;
+            tcl_dll = (DL_HANDLE)DL_OPEN(tcl_name);
+            if (tcl_dll)
+                break;
+        }
+    }
+
+#if defined _WIN32
+    if (ruby_tcl_dll) ruby_xfree(ruby_tcl_dll);
+#endif
+
+    if (!tcl_dll)
+        return NO_TCL_DLL;
+
+    p_Tcl_FindExecutable = (void (*)(const char *))DL_SYM(tcl_dll, "Tcl_FindExecutable");
+    if (!p_Tcl_FindExecutable)
+        return NO_FindExecutable;
+
+    if (appname) {
+        p_Tcl_FindExecutable(appname);
+    } else {
+        p_Tcl_FindExecutable("ruby");
+    }
+
+    return TCLTK_STUBS_OK;
+}
+
+int
+ruby_open_tk_dll()
+{
+    int n;
+    char *ruby_tk_dll = 0;
+    char tk_name[20];
+
+    if (!tcl_dll) {
+        int ret = ruby_open_tcl_dll(RSTRING(rb_argv0)->ptr);
+        if (ret != TCLTK_STUBS_OK) return ret;
+    }
+
+    if (tk_dll) return TCLTK_STUBS_OK;
+
+    ruby_tk_dll = getenv("RUBY_TK_DLL");
+    if (ruby_tk_dll) {
+        tk_dll = (DL_HANDLE)DL_OPEN(ruby_tk_dll);
+    } else {
+        snprintf(tk_name, sizeof tk_name, TK_NAME, DLEXT);
+        /* examine from 8.9 to 8.1 */
+        for (n = '9'; n > '0'; n--) {
+            tk_name[TK_INDEX] = n;
+            tk_dll = (DL_HANDLE)DL_OPEN(tk_name);
+            if (tk_dll)
+                break;
+        }
+    }
+
+    if (!tk_dll)
+        return NO_TK_DLL;
+
+    return TCLTK_STUBS_OK;
+}
+
+int
+ruby_open_tcltk_dll(appname)
+    char *appname;
+{
+    return( ruby_open_tcl_dll(appname) || ruby_open_tk_dll() );
+}
+
+int 
+tcl_stubs_init_p()
+{
+    return(tclStubsPtr != (TclStubs*)NULL);
+}
+
+int 
+tk_stubs_init_p()
+{
+    return(tkStubsPtr != (TkStubs*)NULL);
+}
+
+
+Tcl_Interp *
+ruby_tcl_create_ip_and_stubs_init(st)
+    int *st;
+{
+    Tcl_Interp *tcl_ip;
+
+    if (st) *st = 0;
+
+    if (tcl_stubs_init_p()) {
+        tcl_ip = Tcl_CreateInterp();
+
+        if (!tcl_ip) {
+            if (st) *st = FAIL_CreateInterp;
+            return (Tcl_Interp*)NULL;
+        }
+
+        _nativethread_consistency_check(tcl_ip);
+
+        return tcl_ip;
+
+    } else {
+        Tcl_Interp *(*p_Tcl_CreateInterp)();
+        Tcl_Interp *(*p_Tcl_DeleteInterp)();
+
+        if (!tcl_dll) {
+            int ret = ruby_open_tcl_dll(RSTRING(rb_argv0)->ptr);
+            if (ret != TCLTK_STUBS_OK) {
+                if (st) *st = ret;
+                return (Tcl_Interp*)NULL;
+            }
+        }
+
+        p_Tcl_CreateInterp 
+            = (Tcl_Interp *(*)())DL_SYM(tcl_dll, "Tcl_CreateInterp");
+        if (!p_Tcl_CreateInterp) {
+            if (st) *st = NO_CreateInterp;
+            return (Tcl_Interp*)NULL;
+        }
+
+        p_Tcl_DeleteInterp 
+            = (Tcl_Interp *(*)())DL_SYM(tcl_dll, "Tcl_DeleteInterp");
+        if (!p_Tcl_DeleteInterp) {
+            if (st) *st = NO_DeleteInterp;
+            return (Tcl_Interp*)NULL;
+        }
+
+        tcl_ip = (*p_Tcl_CreateInterp)();
+        if (!tcl_ip) {
+            if (st) *st = FAIL_CreateInterp;
+            return (Tcl_Interp*)NULL;
+        }
+
+        _nativethread_consistency_check(tcl_ip);
+
+        if (!Tcl_InitStubs(tcl_ip, "8.1", 0)) {
+            if (st) *st = FAIL_Tcl_InitStubs;
+            (*p_Tcl_DeleteInterp)(tcl_ip);
+            return (Tcl_Interp*)NULL;
+        }
+
+        return tcl_ip;
+    }
+}
+
+int
+ruby_tcl_stubs_init()
+{
+    int st;
+    Tcl_Interp *tcl_ip;
+
+    if (!tcl_stubs_init_p()) {
+        tcl_ip = ruby_tcl_create_ip_and_stubs_init(&st);
+
+        if (!tcl_ip) return st;
+
+        Tcl_DeleteInterp(tcl_ip);
+    }
+
+    return TCLTK_STUBS_OK;
+}
+
+int
+ruby_tk_stubs_init(tcl_ip)
+    Tcl_Interp *tcl_ip;
+{
+    Tcl_ResetResult(tcl_ip);
+
+    if (tk_stubs_init_p()) {
+        if (Tk_Init(tcl_ip) == TCL_ERROR) {
+            return FAIL_Tk_Init;
+        }
+    } else {
+        int (*p_Tk_Init)(Tcl_Interp *);
+
+        if (!tk_dll) {
+            int ret = ruby_open_tk_dll();
+            if (ret != TCLTK_STUBS_OK) return ret;
+        }
+
+        p_Tk_Init = (int (*)(Tcl_Interp *))DL_SYM(tk_dll, "Tk_Init");
+        if (!p_Tk_Init)
+            return NO_Tk_Init;
+
+        if ((*p_Tk_Init)(tcl_ip) == TCL_ERROR)
+            return FAIL_Tk_Init;
+
+        if (!Tk_InitStubs(tcl_ip, "8.1", 0))
+            return FAIL_Tk_InitStubs;
+
+#ifdef __MACOS__
+        _macinit();
+#endif
+    }
+
+    return TCLTK_STUBS_OK;
+}
+
+int
+ruby_tk_stubs_safeinit(tcl_ip)
+    Tcl_Interp *tcl_ip;
+{
+    Tcl_ResetResult(tcl_ip);
+
+    if (tk_stubs_init_p()) {
+        if (Tk_SafeInit(tcl_ip) == TCL_ERROR)
+            return FAIL_Tk_Init;
+    } else {
+        int (*p_Tk_SafeInit)(Tcl_Interp *);
+
+        if (!tk_dll) {
+            int ret = ruby_open_tk_dll();
+            if (ret != TCLTK_STUBS_OK) return ret;
+        }
+
+        p_Tk_SafeInit = (int (*)(Tcl_Interp *))DL_SYM(tk_dll, "Tk_SafeInit");
+        if (!p_Tk_SafeInit)
+            return NO_Tk_Init;
+
+        if ((*p_Tk_SafeInit)(tcl_ip) == TCL_ERROR)
+            return FAIL_Tk_Init;
+
+        if (!Tk_InitStubs(tcl_ip, "8.1", 0))
+            return FAIL_Tk_InitStubs;
+
+#ifdef __MACOS__
+        _macinit();
+#endif
+    }
+
+    return TCLTK_STUBS_OK;
+}
+
+int
+ruby_tcltk_stubs()
+{
+    int st;
+    Tcl_Interp *tcl_ip;
+
+    st = ruby_open_tcltk_dll(RSTRING(rb_argv0)->ptr);
+    switch(st) {
+    case NO_FindExecutable:
+        return -7;
+    case NO_TCL_DLL:
+    case NO_TK_DLL:
+        return -1;
+    }
+
+    tcl_ip = ruby_tcl_create_ip_and_stubs_init(&st);
+    if (!tcl_ip) {
+        switch(st) {
+        case NO_CreateInterp:
+        case NO_DeleteInterp:
+            return -2;
+        case FAIL_CreateInterp:
+            return -3;
+        case FAIL_Tcl_InitStubs:
+            return -5;
+        }
+    }
+
+    st = ruby_tk_stubs_init(tcl_ip);
+    switch(st) {
+    case NO_Tk_Init:
+        Tcl_DeleteInterp(tcl_ip);
+        return -4;
+    case FAIL_Tk_Init:
+    case FAIL_Tk_InitStubs:
+        Tcl_DeleteInterp(tcl_ip);
+        return -6;
+    }
+
+    Tcl_DeleteInterp(tcl_ip);
+
+    return 0;
+}
+
+/*###################################################*/
+#else /* ! USE_TCL_STUBS || ! USE_TK_STUBS) */
+/*###################################################*/
+
+static int open_tcl_dll = 0;
+static int call_tk_stubs_init = 0;
+
+int
+ruby_open_tcl_dll(appname)
+    char *appname;
+{
+    if (appname) {
+        Tcl_FindExecutable(appname);
+    } else {
+        Tcl_FindExecutable("ruby");
+    }
+    open_tcl_dll = 1;
+
+    return TCLTK_STUBS_OK;
+}
+
+int ruby_open_tk_dll()
+{
+    if (!open_tcl_dll) {
+        ruby_open_tcl_dll(RSTRING(rb_argv0)->ptr);
+    }
+
+    return TCLTK_STUBS_OK;
+}
+
+int ruby_open_tcltk_dll(appname)
+    char *appname;
+{
+    return( ruby_open_tcl_dll(appname) || ruby_open_tk_dll() );
+}
+
+int 
+tcl_stubs_init_p()
+{
+    return 1;
+}
+
+int 
+tk_stubs_init_p()
+{
+    return call_tk_stubs_init;
+}
+
+Tcl_Interp *
+ruby_tcl_create_ip_and_stubs_init(st)
+    int *st;
+{
+    Tcl_Interp *tcl_ip;
+
+    if (!open_tcl_dll) {
+        ruby_open_tcl_dll(RSTRING(rb_argv0)->ptr);
+    }
+
+    if (st) *st = 0;
+    tcl_ip = Tcl_CreateInterp();
+    if (!tcl_ip) {
+        if (st) *st = FAIL_CreateInterp;
+        return (Tcl_Interp*)NULL;
+    }
+
+    _nativethread_consistency_check(tcl_ip);
+
+    return tcl_ip;
+}
+
+int 
+ruby_tcl_stubs_init()
+{
+    return TCLTK_STUBS_OK;
+}
+
+int 
+ruby_tk_stubs_init(tcl_ip)
+    Tcl_Interp *tcl_ip;
+{
+    if (Tk_Init(tcl_ip) == TCL_ERROR)
+        return FAIL_Tk_Init;
+
+    if (!call_tk_stubs_init) {
+#ifdef __MACOS__
+        _macinit();
+#endif
+        call_tk_stubs_init = 1;
+    }
+
+    return TCLTK_STUBS_OK;
+}
+
+int
+ruby_tk_stubs_safeinit(tcl_ip)
+    Tcl_Interp *tcl_ip;
+{
+#if TCL_MAJOR_VERSION >= 8
+    if (Tk_SafeInit(tcl_ip) == TCL_ERROR)
+        return FAIL_Tk_Init;
+
+    if (!call_tk_stubs_init) {
+#ifdef __MACOS__
+        _macinit();
+#endif
+        call_tk_stubs_init = 1;
+    }
+
+    return TCLTK_STUBS_OK;
+
+#else /* TCL_MAJOR_VERSION < 8 */
+
+    return FAIL_Tk_Init;
+#endif
+}
+
+int 
+ruby_tcltk_stubs()
+{
+    Tcl_FindExecutable(RSTRING(rb_argv0)->ptr);
+    return 0;
+}
+
+#endif