static void test_emptyfields(void)
{
csvread c;
csvread_init(&c, 1024, 16);
strcpy(c.line, ",");
splitfields(&c);
csvread_dump(&c);
csvread_destroy(&c);
}
static void test_abc(void)
{
csvread c;
csvread_init(&c, 1024, 16);
strcpy(c.line, "a,b,c");
splitfields(&c);
csvread_dump(&c);
csvread_destroy(&c);
}
static void test_quotes(void)
{
csvread c;
csvread_init(&c, 1024, 2);
strcpy(c.line, "\"\"foo\"\",\"oh, my \"\"god\"\"\"");
splitfields(&c);
dequot(&c);
csvread_dump(&c);
csvread_destroy(&c);
}
static void test_quotedcommas(void)
{
csvread c;
csvread_init(&c, 1024, 2);
strcpy(c.line, "\"a,b,c\",\"d,e,f\"");
splitfields(&c);
dequot(&c);
csvread_dump(&c);
csvread_destroy(&c);
}
static void test_emptystring(void)
{
csvread c;
csvread_init(&c, 1024, 16);
strcpy(c.line, "\"\"");
splitfields(&c);
dequot(&c);
csvread_dump(&c);
csvread_destroy(&c);
}
// gcopnames creates opnames.h from go.h.
// It finds the OXXX enum, pulls out all the constants
// from OXXX to OEND, and writes a table mapping
// op to string.
void
gcopnames(char *dir, char *file)
{
char *p, *q;
int i, j, end;
Buf in, b, out;
Vec lines, fields;
binit(&in);
binit(&b);
binit(&out);
vinit(&lines);
vinit(&fields);
bwritestr(&out, bprintf(&b, "// auto generated by go tool dist\n"));
bwritestr(&out, bprintf(&b, "static char *opnames[] = {\n"));
readfile(&in, bprintf(&b, "%s/go.h", dir));
splitlines(&lines, bstr(&in));
i = 0;
while(i<lines.len && !contains(lines.p[i], "OXXX"))
i++;
end = 0;
for(; i<lines.len && !end; i++) {
p = xstrstr(lines.p[i], "//");
if(p != nil)
*p = '\0';
end = contains(lines.p[i], "OEND");
splitfields(&fields, lines.p[i]);
for(j=0; j<fields.len; j++) {
q = fields.p[j];
if(*q == 'O')
q++;
p = q+xstrlen(q)-1;
if(*p == ',')
*p = '\0';
bwritestr(&out, bprintf(&b, " [O%s] = \"%s\",\n", q, q));
}
}
bwritestr(&out, bprintf(&b, "};\n"));
writefile(&out, file, 0);
bfree(&in);
bfree(&b);
bfree(&out);
vfree(&lines);
vfree(&fields);
}
/**
* @return -1 for error/feof; otherwise number of fields in line; 0 for comments, empty lines
* @note currently does not support multi-line fields
*/
long csvread_line(csvread *r, FILE *f)
{
char *line;
long fieldcnt = -1;
r->fields = 0L;
line = fgets(r->line, r->linebufsz, f);
if (line) {
strcspn(r->line, "\n")[r->line] = '\0'; /* remove newline */
if ('#' == r->line[0]) {
/* comment */
fieldcnt = 0L;
} else if ('\r' == r->line[0] || '\n' == r->line[0]) {
/* empty line */
fieldcnt = 0L;
} else {
splitfields(r);
dequot(r);
fieldcnt = r->fields;
if (r->trim)
trimfields(r);
}
}
return fieldcnt;
}
// install installs the library, package, or binary associated with dir,
// which is relative to $GOROOT/src.
static void
install(char *dir)
{
char *name, *p, *elem, *prefix, *exe;
bool islib, ispkg, isgo, stale, ispackcmd;
Buf b, b1, path;
Vec compile, files, link, go, missing, clean, lib, extra;
Time ttarg, t;
int i, j, k, n, doclean, targ;
if(vflag) {
if(!streq(goos, gohostos) || !streq(goarch, gohostarch))
errprintf("%s (%s/%s)\n", dir, goos, goarch);
else
errprintf("%s\n", dir);
}
binit(&b);
binit(&b1);
binit(&path);
vinit(&compile);
vinit(&files);
vinit(&link);
vinit(&go);
vinit(&missing);
vinit(&clean);
vinit(&lib);
vinit(&extra);
// path = full path to dir.
bpathf(&path, "%s/src/%s", goroot, dir);
name = lastelem(dir);
// For misc/prof, copy into the tool directory and we're done.
if(hasprefix(dir, "misc/")) {
copy(bpathf(&b, "%s/%s", tooldir, name),
bpathf(&b1, "%s/misc/%s", goroot, name), 1);
goto out;
}
// For release, cmd/prof is not included.
if((streq(dir, "cmd/prof")) && !isdir(bstr(&path))) {
if(vflag > 1)
errprintf("skipping %s - does not exist\n", dir);
goto out;
}
// set up gcc command line on first run.
if(gccargs.len == 0) {
bprintf(&b, "%s %s", defaultcc, defaultcflags);
splitfields(&gccargs, bstr(&b));
for(i=0; i<nelem(proto_gccargs); i++)
vadd(&gccargs, proto_gccargs[i]);
if(defaultcflags[0] == '\0') {
for(i=0; i<nelem(proto_gccargs2); i++)
vadd(&gccargs, proto_gccargs2[i]);
}
if(contains(gccargs.p[0], "clang")) {
// disable ASCII art in clang errors, if possible
vadd(&gccargs, "-fno-caret-diagnostics");
// clang is too smart about unused command-line arguments
vadd(&gccargs, "-Qunused-arguments");
}
// disable word wrapping in error messages
vadd(&gccargs, "-fmessage-length=0");
if(streq(gohostos, "darwin")) {
// golang.org/issue/5261
vadd(&gccargs, "-mmacosx-version-min=10.6");
}
}
if(ldargs.len == 0 && defaultldflags[0] != '\0') {
bprintf(&b, "%s", defaultldflags);
splitfields(&ldargs, bstr(&b));
}
islib = hasprefix(dir, "lib") || streq(dir, "cmd/cc") || streq(dir, "cmd/gc");
ispkg = hasprefix(dir, "pkg");
isgo = ispkg || streq(dir, "cmd/go") || streq(dir, "cmd/cgo");
exe = "";
if(streq(gohostos, "windows"))
exe = ".exe";
// Start final link command line.
// Note: code below knows that link.p[targ] is the target.
ispackcmd = 0;
if(islib) {
// C library.
vadd(&link, "ar");
if(streq(gohostos, "plan9"))
vadd(&link, "rc");
else
vadd(&link, "rsc");
prefix = "";
if(!hasprefix(name, "lib"))
prefix = "lib";
targ = link.len;
vadd(&link, bpathf(&b, "%s/pkg/obj/%s_%s/%s%s.a", goroot, gohostos, gohostarch, prefix, name));
} else if(ispkg) {
// Go library (package).
ispackcmd = 1;
vadd(&link, "pack"); // program name - unused here, but all the other cases record one
p = bprintf(&b, "%s/pkg/%s_%s/%s", goroot, goos, goarch, dir+4);
*xstrrchr(p, '/') = '\0';
xmkdirall(p);
targ = link.len;
vadd(&link, bpathf(&b, "%s/pkg/%s_%s/%s.a", goroot, goos, goarch, dir+4));
} else if(streq(dir, "cmd/go") || streq(dir, "cmd/cgo")) {
// Go command.
vadd(&link, bpathf(&b, "%s/%sl", tooldir, gochar));
vadd(&link, "-o");
elem = name;
if(streq(elem, "go"))
elem = "go_bootstrap";
targ = link.len;
vadd(&link, bpathf(&b, "%s/%s%s", tooldir, elem, exe));
} else {
// C command. Use gccargs and ldargs.
if(streq(gohostos, "plan9")) {
vadd(&link, bprintf(&b, "%sl", gohostchar));
vadd(&link, "-o");
targ = link.len;
vadd(&link, bpathf(&b, "%s/%s", tooldir, name));
} else {
vcopy(&link, gccargs.p, gccargs.len);
vcopy(&link, ldargs.p, ldargs.len);
if(sflag)
vadd(&link, "-static");
vadd(&link, "-o");
targ = link.len;
vadd(&link, bpathf(&b, "%s/%s%s", tooldir, name, exe));
if(streq(gohostarch, "amd64"))
vadd(&link, "-m64");
else if(streq(gohostarch, "386"))
vadd(&link, "-m32");
}
}
ttarg = mtime(link.p[targ]);
// Gather files that are sources for this target.
// Everything in that directory, and any target-specific
// additions.
xreaddir(&files, bstr(&path));
// Remove files beginning with . or _,
// which are likely to be editor temporary files.
// This is the same heuristic build.ScanDir uses.
// There do exist real C files beginning with _,
// so limit that check to just Go files.
n = 0;
for(i=0; i<files.len; i++) {
p = files.p[i];
if(hasprefix(p, ".") || (hasprefix(p, "_") && hassuffix(p, ".go")))
xfree(p);
else
files.p[n++] = p;
}
files.len = n;
for(i=0; i<nelem(deptab); i++) {
if(streq(dir, deptab[i].prefix) ||
(hassuffix(deptab[i].prefix, "/") && hasprefix(dir, deptab[i].prefix))) {
for(j=0; (p=deptab[i].dep[j])!=nil; j++) {
breset(&b1);
bwritestr(&b1, p);
bsubst(&b1, "$GOROOT", goroot);
bsubst(&b1, "$GOOS", goos);
bsubst(&b1, "$GOARCH", goarch);
p = bstr(&b1);
if(hassuffix(p, ".a")) {
vadd(&lib, bpathf(&b, "%s", p));
continue;
}
if(hassuffix(p, "/*")) {
bpathf(&b, "%s/%s", bstr(&path), p);
b.len -= 2;
xreaddir(&extra, bstr(&b));
bprintf(&b, "%s", p);
b.len -= 2;
for(k=0; k<extra.len; k++)
vadd(&files, bpathf(&b1, "%s/%s", bstr(&b), extra.p[k]));
continue;
}
if(hasprefix(p, "-")) {
p++;
n = 0;
for(k=0; k<files.len; k++) {
if(hasprefix(files.p[k], p))
xfree(files.p[k]);
else
files.p[n++] = files.p[k];
}
files.len = n;
continue;
}
vadd(&files, p);
}
}
}
vuniq(&files);
// Convert to absolute paths.
for(i=0; i<files.len; i++) {
if(!isabs(files.p[i])) {
bpathf(&b, "%s/%s", bstr(&path), files.p[i]);
xfree(files.p[i]);
files.p[i] = btake(&b);
}
}
// Is the target up-to-date?
stale = rebuildall;
n = 0;
for(i=0; i<files.len; i++) {
p = files.p[i];
for(j=0; j<nelem(depsuffix); j++)
if(hassuffix(p, depsuffix[j]))
goto ok;
xfree(files.p[i]);
continue;
ok:
t = mtime(p);
if(t != 0 && !hassuffix(p, ".a") && !shouldbuild(p, dir)) {
xfree(files.p[i]);
continue;
}
if(hassuffix(p, ".go"))
vadd(&go, p);
if(t > ttarg)
stale = 1;
if(t == 0) {
vadd(&missing, p);
files.p[n++] = files.p[i];
continue;
}
files.p[n++] = files.p[i];
}
files.len = n;
// If there are no files to compile, we're done.
if(files.len == 0)
goto out;
for(i=0; i<lib.len && !stale; i++)
if(mtime(lib.p[i]) > ttarg)
stale = 1;
if(!stale)
goto out;
// For package runtime, copy some files into the work space.
if(streq(dir, "pkg/runtime")) {
copy(bpathf(&b, "%s/arch_GOARCH.h", workdir),
bpathf(&b1, "%s/arch_%s.h", bstr(&path), goarch), 0);
copy(bpathf(&b, "%s/defs_GOOS_GOARCH.h", workdir),
bpathf(&b1, "%s/defs_%s_%s.h", bstr(&path), goos, goarch), 0);
p = bpathf(&b1, "%s/signal_%s_%s.h", bstr(&path), goos, goarch);
if(isfile(p))
copy(bpathf(&b, "%s/signal_GOOS_GOARCH.h", workdir), p, 0);
copy(bpathf(&b, "%s/os_GOOS.h", workdir),
bpathf(&b1, "%s/os_%s.h", bstr(&path), goos), 0);
copy(bpathf(&b, "%s/signals_GOOS.h", workdir),
bpathf(&b1, "%s/signals_%s.h", bstr(&path), goos), 0);
}
// Generate any missing files; regenerate existing ones.
for(i=0; i<files.len; i++) {
p = files.p[i];
elem = lastelem(p);
for(j=0; j<nelem(gentab); j++) {
if(gentab[j].gen == nil)
continue;
if(hasprefix(elem, gentab[j].nameprefix)) {
if(vflag > 1)
errprintf("generate %s\n", p);
gentab[j].gen(bstr(&path), p);
// Do not add generated file to clean list.
// In pkg/runtime, we want to be able to
// build the package with the go tool,
// and it assumes these generated files already
// exist (it does not know how to build them).
// The 'clean' command can remove
// the generated files.
goto built;
}
}
// Did not rebuild p.
if(find(p, missing.p, missing.len) >= 0)
fatal("missing file %s", p);
built:;
}
// One more copy for package runtime.
// The last batch was required for the generators.
// This one is generated.
if(streq(dir, "pkg/runtime")) {
copy(bpathf(&b, "%s/zasm_GOOS_GOARCH.h", workdir),
bpathf(&b1, "%s/zasm_%s_%s.h", bstr(&path), goos, goarch), 0);
}
// Generate .c files from .goc files.
if(streq(dir, "pkg/runtime")) {
for(i=0; i<files.len; i++) {
p = files.p[i];
if(!hassuffix(p, ".goc"))
continue;
// b = path/zp but with _goos_goarch.c instead of .goc
bprintf(&b, "%s%sz%s", bstr(&path), slash, lastelem(p));
b.len -= 4;
bwritef(&b, "_%s_%s.c", goos, goarch);
goc2c(p, bstr(&b));
vadd(&files, bstr(&b));
}
vuniq(&files);
}
if((!streq(goos, gohostos) || !streq(goarch, gohostarch)) && isgo) {
// We've generated the right files; the go command can do the build.
if(vflag > 1)
errprintf("skip build for cross-compile %s\n", dir);
goto nobuild;
}
// Compile the files.
for(i=0; i<files.len; i++) {
if(!hassuffix(files.p[i], ".c") && !hassuffix(files.p[i], ".s"))
continue;
name = lastelem(files.p[i]);
vreset(&compile);
if(!isgo) {
// C library or tool.
if(streq(gohostos, "plan9")) {
vadd(&compile, bprintf(&b, "%sc", gohostchar));
vadd(&compile, "-FTVwp");
vadd(&compile, "-DPLAN9");
vadd(&compile, "-D__STDC__=1");
vadd(&compile, "-D__SIZE_TYPE__=ulong"); // for GNU Bison
vadd(&compile, bpathf(&b, "-I%s/include/plan9", goroot));
vadd(&compile, bpathf(&b, "-I%s/include/plan9/%s", goroot, gohostarch));
} else {
vcopy(&compile, gccargs.p, gccargs.len);
vadd(&compile, "-c");
if(streq(gohostarch, "amd64"))
vadd(&compile, "-m64");
else if(streq(gohostarch, "386"))
vadd(&compile, "-m32");
vadd(&compile, "-I");
vadd(&compile, bpathf(&b, "%s/include", goroot));
}
if(streq(dir, "lib9"))
vadd(&compile, "-DPLAN9PORT");
vadd(&compile, "-I");
vadd(&compile, bstr(&path));
// lib9/goos.c gets the default constants hard-coded.
if(streq(name, "goos.c")) {
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOOS=\"%s\"", goos));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOARCH=\"%s\"", goarch));
bprintf(&b1, "%s", goroot_final);
bsubst(&b1, "\\", "\\\\"); // turn into C string
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOROOT=\"%s\"", bstr(&b1)));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOVERSION=\"%s\"", goversion));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOARM=\"%s\"", goarm));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GO386=\"%s\"", go386));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GO_EXTLINK_ENABLED=\"%s\"", goextlinkenabled));
}
// gc/lex.c records the GOEXPERIMENT setting used during the build.
if(streq(name, "lex.c")) {
xgetenv(&b, "GOEXPERIMENT");
vadd(&compile, "-D");
vadd(&compile, bprintf(&b1, "GOEXPERIMENT=\"%s\"", bstr(&b)));
}
} else {
// Supporting files for a Go package.
if(hassuffix(files.p[i], ".s"))
vadd(&compile, bpathf(&b, "%s/%sa", tooldir, gochar));
else {
vadd(&compile, bpathf(&b, "%s/%sc", tooldir, gochar));
vadd(&compile, "-F");
vadd(&compile, "-V");
vadd(&compile, "-w");
}
vadd(&compile, "-I");
vadd(&compile, workdir);
vadd(&compile, "-I");
vadd(&compile, bprintf(&b, "%s/pkg/%s_%s", goroot, goos, goarch));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOOS_%s", goos));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOARCH_%s", goarch));
vadd(&compile, "-D");
vadd(&compile, bprintf(&b, "GOOS_GOARCH_%s_%s", goos, goarch));
}
bpathf(&b, "%s/%s", workdir, lastelem(files.p[i]));
doclean = 1;
if(!isgo && streq(gohostos, "darwin")) {
// To debug C programs on OS X, it is not enough to say -ggdb
// on the command line. You have to leave the object files
// lying around too. Leave them in pkg/obj/, which does not
// get removed when this tool exits.
bpathf(&b1, "%s/pkg/obj/%s", goroot, dir);
xmkdirall(bstr(&b1));
bpathf(&b, "%s/%s", bstr(&b1), lastelem(files.p[i]));
doclean = 0;
}
// Change the last character of the output file (which was c or s).
if(streq(gohostos, "plan9"))
b.p[b.len-1] = gohostchar[0];
else
b.p[b.len-1] = 'o';
vadd(&compile, "-o");
vadd(&compile, bstr(&b));
vadd(&compile, files.p[i]);
bgrunv(bstr(&path), CheckExit, &compile);
vadd(&link, bstr(&b));
if(doclean)
vadd(&clean, bstr(&b));
}
bgwait();
if(isgo) {
// The last loop was compiling individual files.
// Hand the Go files to the compiler en masse.
vreset(&compile);
vadd(&compile, bpathf(&b, "%s/%sg", tooldir, gochar));
bpathf(&b, "%s/_go_.a", workdir);
vadd(&compile, "-pack");
vadd(&compile, "-o");
vadd(&compile, bstr(&b));
vadd(&clean, bstr(&b));
if(!ispackcmd)
vadd(&link, bstr(&b));
vadd(&compile, "-p");
if(hasprefix(dir, "pkg/"))
vadd(&compile, dir+4);
else
vadd(&compile, "main");
if(streq(dir, "pkg/runtime"))
vadd(&compile, "-+");
vcopy(&compile, go.p, go.len);
runv(nil, bstr(&path), CheckExit, &compile);
if(ispackcmd) {
xremove(link.p[targ]);
dopack(link.p[targ], bstr(&b), &link.p[targ+1], link.len - (targ+1));
goto nobuild;
}
}
if(!islib && !isgo) {
// C binaries need the libraries explicitly, and -lm.
vcopy(&link, lib.p, lib.len);
if(!streq(gohostos, "plan9"))
vadd(&link, "-lm");
}
// Remove target before writing it.
xremove(link.p[targ]);
runv(nil, nil, CheckExit, &link);
nobuild:
// In package runtime, we install runtime.h and cgocall.h too,
// for use by cgo compilation.
if(streq(dir, "pkg/runtime")) {
copy(bpathf(&b, "%s/pkg/%s_%s/cgocall.h", goroot, goos, goarch),
bpathf(&b1, "%s/src/pkg/runtime/cgocall.h", goroot), 0);
copy(bpathf(&b, "%s/pkg/%s_%s/runtime.h", goroot, goos, goarch),
bpathf(&b1, "%s/src/pkg/runtime/runtime.h", goroot), 0);
}
out:
for(i=0; i<clean.len; i++)
xremove(clean.p[i]);
bfree(&b);
bfree(&b1);
bfree(&path);
vfree(&compile);
vfree(&files);
vfree(&link);
vfree(&go);
vfree(&missing);
vfree(&clean);
vfree(&lib);
vfree(&extra);
}
// findgoversion determines the Go version to use in the version string.
static char*
findgoversion(void)
{
char *tag, *rev, *p;
int i, nrev;
Buf b, path, bmore, branch;
Vec tags;
binit(&b);
binit(&path);
binit(&bmore);
binit(&branch);
vinit(&tags);
// The $GOROOT/VERSION file takes priority, for distributions
// without the Mercurial repo.
bpathf(&path, "%s/VERSION", goroot);
if(isfile(bstr(&path))) {
readfile(&b, bstr(&path));
chomp(&b);
// Commands such as "dist version > VERSION" will cause
// the shell to create an empty VERSION file and set dist's
// stdout to its fd. dist in turn looks at VERSION and uses
// its content if available, which is empty at this point.
if(b.len > 0)
goto done;
}
// The $GOROOT/VERSION.cache file is a cache to avoid invoking
// hg every time we run this command. Unlike VERSION, it gets
// deleted by the clean command.
bpathf(&path, "%s/VERSION.cache", goroot);
if(isfile(bstr(&path))) {
readfile(&b, bstr(&path));
chomp(&b);
goto done;
}
// Otherwise, use Mercurial.
// What is the current branch?
run(&branch, goroot, CheckExit, "hg", "identify", "-b", nil);
chomp(&branch);
// What are the tags along the current branch?
tag = "devel";
rev = ".";
run(&b, goroot, CheckExit, "hg", "log", "-b", bstr(&branch), "-r", ".:0", "--template", "{tags} + ", nil);
splitfields(&tags, bstr(&b));
nrev = 0;
for(i=0; i<tags.len; i++) {
p = tags.p[i];
if(streq(p, "+"))
nrev++;
// NOTE: Can reenable the /* */ code when we want to
// start reporting versions named 'weekly' again.
if(/*hasprefix(p, "weekly.") ||*/ hasprefix(p, "go")) {
tag = xstrdup(p);
// If this tag matches the current checkout
// exactly (no "+" yet), don't show extra
// revision information.
if(nrev == 0)
rev = "";
break;
}
}
if(tag[0] == '\0') {
// Did not find a tag; use branch name.
bprintf(&b, "branch.%s", bstr(&branch));
tag = btake(&b);
}
if(rev[0]) {
// Tag is before the revision we're building.
// Add extra information.
run(&bmore, goroot, CheckExit, "hg", "log", "--template", " +{node|short} {date|date}", "-r", rev, nil);
chomp(&bmore);
}
bprintf(&b, "%s", tag);
if(bmore.len > 0)
bwriteb(&b, &bmore);
// Cache version.
writefile(&b, bstr(&path), 0);
done:
p = btake(&b);
bfree(&b);
bfree(&path);
bfree(&bmore);
bfree(&branch);
vfree(&tags);
return p;
}
// shouldbuild reports whether we should build this file.
// It applies the same rules that are used with context tags
// in package go/build, except that the GOOS and GOARCH
// can appear anywhere in the file name, not just after _.
// In particular, they can be the entire file name (like windows.c).
// We also allow the special tag cmd_go_bootstrap.
// See ../go/bootstrap.go and package go/build.
static bool
shouldbuild(char *file, char *dir)
{
char *name, *p;
int i, j, ret;
Buf b;
Vec lines, fields;
// Check file name for GOOS or GOARCH.
name = lastelem(file);
for(i=0; i<nelem(okgoos); i++)
if(contains(name, okgoos[i]) && !streq(okgoos[i], goos))
return 0;
for(i=0; i<nelem(okgoarch); i++)
if(contains(name, okgoarch[i]) && !streq(okgoarch[i], goarch))
return 0;
// Omit test files.
if(contains(name, "_test"))
return 0;
// cmd/go/doc.go has a giant /* */ comment before
// it gets to the important detail that it is not part of
// package main. We don't parse those comments,
// so special case that file.
if(hassuffix(file, "cmd/go/doc.go") || hassuffix(file, "cmd\\go\\doc.go"))
return 0;
if(hassuffix(file, "cmd/cgo/doc.go") || hassuffix(file, "cmd\\cgo\\doc.go"))
return 0;
// Check file contents for // +build lines.
binit(&b);
vinit(&lines);
vinit(&fields);
ret = 1;
readfile(&b, file);
splitlines(&lines, bstr(&b));
for(i=0; i<lines.len; i++) {
p = lines.p[i];
while(*p == ' ' || *p == '\t' || *p == '\r' || *p == '\n')
p++;
if(*p == '\0')
continue;
if(contains(p, "package documentation")) {
ret = 0;
goto out;
}
if(contains(p, "package main") && !streq(dir, "cmd/go") && !streq(dir, "cmd/cgo")) {
ret = 0;
goto out;
}
if(!hasprefix(p, "//"))
break;
if(!contains(p, "+build"))
continue;
splitfields(&fields, lines.p[i]);
if(fields.len < 2 || !streq(fields.p[1], "+build"))
continue;
for(j=2; j<fields.len; j++) {
p = fields.p[j];
if((*p == '!' && !matchfield(p+1)) || matchfield(p))
goto fieldmatch;
}
ret = 0;
goto out;
fieldmatch:;
}
out:
bfree(&b);
vfree(&lines);
vfree(&fields);
return ret;
}
// mkzruntimedefs writes zruntime_defs_$GOOS_$GOARCH.h,
// which contains Go struct definitions equivalent to the C ones.
// Mostly we just write the output of 6c -q to the file.
// However, we run it on multiple files, so we have to delete
// the duplicated definitions, and we don't care about the funcs
// and consts, so we delete those too.
//
void
mkzruntimedefs(char *dir, char *file)
{
int i, skip;
char *p;
Buf in, b, out;
Vec argv, lines, fields, seen;
binit(&in);
binit(&b);
binit(&out);
vinit(&argv);
vinit(&lines);
vinit(&fields);
vinit(&seen);
bwritestr(&out, "// auto generated by go tool dist\n"
"\n"
"package runtime\n"
"import \"unsafe\"\n"
"var _ unsafe.Pointer\n"
"\n"
);
// Run 6c -DGOOS_goos -DGOARCH_goarch -Iworkdir -q
// on each of the runtimedefs C files.
vadd(&argv, bpathf(&b, "%s/%sc", tooldir, gochar));
vadd(&argv, bprintf(&b, "-DGOOS_%s", goos));
vadd(&argv, bprintf(&b, "-DGOARCH_%s", goarch));
vadd(&argv, bprintf(&b, "-I%s", workdir));
vadd(&argv, "-q");
vadd(&argv, "");
p = argv.p[argv.len-1];
for(i=0; i<nelem(runtimedefs); i++) {
argv.p[argv.len-1] = runtimedefs[i];
runv(&b, dir, CheckExit, &argv);
bwriteb(&in, &b);
}
argv.p[argv.len-1] = p;
// Process the aggregate output.
skip = 0;
splitlines(&lines, bstr(&in));
for(i=0; i<lines.len; i++) {
p = lines.p[i];
// Drop comment, func, and const lines.
if(hasprefix(p, "//") || hasprefix(p, "const") || hasprefix(p, "func"))
continue;
// Note beginning of type or var decl, which can be multiline.
// Remove duplicates. The linear check of seen here makes the
// whole processing quadratic in aggregate, but there are only
// about 100 declarations, so this is okay (and simple).
if(hasprefix(p, "type ") || hasprefix(p, "var ")) {
splitfields(&fields, p);
if(fields.len < 2)
continue;
if(find(fields.p[1], seen.p, seen.len) >= 0) {
if(streq(fields.p[fields.len-1], "{"))
skip = 1; // skip until }
continue;
}
vadd(&seen, fields.p[1]);
}
if(skip) {
if(hasprefix(p, "}"))
skip = 0;
continue;
}
bwritestr(&out, p);
}
writefile(&out, file, 0);
bfree(&in);
bfree(&b);
bfree(&out);
vfree(&argv);
vfree(&lines);
vfree(&fields);
vfree(&seen);
}
// mkzasm writes zasm_$GOOS_$GOARCH.h,
// which contains struct offsets for use by
// assembly files. It also writes a copy to the work space
// under the name zasm_GOOS_GOARCH.h (no expansion).
//
void
mkzasm(char *dir, char *file)
{
int i, n;
char *aggr, *p;
Buf in, b, out;
Vec argv, lines, fields;
binit(&in);
binit(&b);
binit(&out);
vinit(&argv);
vinit(&lines);
vinit(&fields);
bwritestr(&out, "// auto generated by go tool dist\n\n");
for(i=0; i<nelem(zasmhdr); i++) {
if(hasprefix(goarch, zasmhdr[i].goarch) && hasprefix(goos, zasmhdr[i].goos)) {
bwritestr(&out, zasmhdr[i].hdr);
goto ok;
}
}
fatal("unknown $GOOS/$GOARCH in mkzasm");
ok:
// Run 6c -DGOOS_goos -DGOARCH_goarch -Iworkdir -a proc.c
// to get acid [sic] output.
vreset(&argv);
vadd(&argv, bpathf(&b, "%s/%sc", tooldir, gochar));
vadd(&argv, bprintf(&b, "-DGOOS_%s", goos));
vadd(&argv, bprintf(&b, "-DGOARCH_%s", goarch));
vadd(&argv, bprintf(&b, "-I%s", workdir));
vadd(&argv, "-a");
vadd(&argv, "proc.c");
runv(&in, dir, CheckExit, &argv);
// Convert input like
// aggr G
// {
// Gobuf 24 sched;
// 'Y' 48 stack0;
// }
// into output like
// #define g_sched 24
// #define g_stack0 48
//
aggr = nil;
splitlines(&lines, bstr(&in));
for(i=0; i<lines.len; i++) {
splitfields(&fields, lines.p[i]);
if(fields.len == 2 && streq(fields.p[0], "aggr")) {
if(streq(fields.p[1], "G"))
aggr = "g";
else if(streq(fields.p[1], "M"))
aggr = "m";
else if(streq(fields.p[1], "Gobuf"))
aggr = "gobuf";
else if(streq(fields.p[1], "WinCall"))
aggr = "wincall";
}
if(hasprefix(lines.p[i], "}"))
aggr = nil;
if(aggr && hasprefix(lines.p[i], "\t") && fields.len >= 2) {
n = fields.len;
p = fields.p[n-1];
if(p[xstrlen(p)-1] == ';')
p[xstrlen(p)-1] = '\0';
bwritestr(&out, bprintf(&b, "#define %s_%s %s\n", aggr, fields.p[n-1], fields.p[n-2]));
}
}
// Write both to file and to workdir/zasm_GOOS_GOARCH.h.
writefile(&out, file, 0);
writefile(&out, bprintf(&b, "%s/zasm_GOOS_GOARCH.h", workdir), 0);
bfree(&in);
bfree(&b);
bfree(&out);
vfree(&argv);
vfree(&lines);
vfree(&fields);
}
// mkzasm writes zasm_$GOOS_$GOARCH.h,
// which contains struct offsets for use by
// assembly files. It also writes a copy to the work space
// under the name zasm_GOOS_GOARCH.h (no expansion).
//
void
mkzasm(char *dir, char *file)
{
int i, n;
char *aggr, *p;
Buf in, b, out, exp;
Vec argv, lines, fields;
binit(&in);
binit(&b);
binit(&out);
binit(&exp);
vinit(&argv);
vinit(&lines);
vinit(&fields);
bwritestr(&out, "// auto generated by go tool dist\n\n");
for(i=0; i<nelem(zasmhdr); i++) {
if(hasprefix(goarch, zasmhdr[i].goarch) && hasprefix(goos, zasmhdr[i].goos)) {
bwritestr(&out, zasmhdr[i].hdr);
goto ok;
}
}
fatal("unknown $GOOS/$GOARCH in mkzasm");
ok:
// Run 6c -D GOOS_goos -D GOARCH_goarch -I workdir -a -n -o workdir/proc.acid proc.c
// to get acid [sic] output.
vreset(&argv);
vadd(&argv, bpathf(&b, "%s/%sc", tooldir, gochar));
vadd(&argv, "-D");
vadd(&argv, bprintf(&b, "GOOS_%s", goos));
vadd(&argv, "-D");
vadd(&argv, bprintf(&b, "GOARCH_%s", goarch));
vadd(&argv, "-I");
vadd(&argv, bprintf(&b, "%s", workdir));
vadd(&argv, "-a");
vadd(&argv, "-n");
vadd(&argv, "-o");
vadd(&argv, bpathf(&b, "%s/proc.acid", workdir));
vadd(&argv, "proc.c");
runv(nil, dir, CheckExit, &argv);
readfile(&in, bpathf(&b, "%s/proc.acid", workdir));
// Convert input like
// aggr G
// {
// Gobuf 24 sched;
// 'Y' 48 stack0;
// }
// StackMin = 128;
// into output like
// #define g_sched 24
// #define g_stack0 48
// #define const_StackMin 128
aggr = nil;
splitlines(&lines, bstr(&in));
for(i=0; i<lines.len; i++) {
splitfields(&fields, lines.p[i]);
if(fields.len == 2 && streq(fields.p[0], "aggr")) {
if(streq(fields.p[1], "G"))
aggr = "g";
else if(streq(fields.p[1], "M"))
aggr = "m";
else if(streq(fields.p[1], "P"))
aggr = "p";
else if(streq(fields.p[1], "Gobuf"))
aggr = "gobuf";
else if(streq(fields.p[1], "LibCall"))
aggr = "libcall";
else if(streq(fields.p[1], "WinCallbackContext"))
aggr = "cbctxt";
else if(streq(fields.p[1], "SEH"))
aggr = "seh";
}
if(hasprefix(lines.p[i], "}"))
aggr = nil;
if(aggr && hasprefix(lines.p[i], "\t") && fields.len >= 2) {
n = fields.len;
p = fields.p[n-1];
if(p[xstrlen(p)-1] == ';')
p[xstrlen(p)-1] = '\0';
bwritestr(&out, bprintf(&b, "#define %s_%s %s\n", aggr, fields.p[n-1], fields.p[n-2]));
}
if(fields.len == 3 && streq(fields.p[1], "=")) { // generated from enumerated constants
p = fields.p[2];
if(p[xstrlen(p)-1] == ';')
p[xstrlen(p)-1] = '\0';
bwritestr(&out, bprintf(&b, "#define const_%s %s\n", fields.p[0], p));
}
}
// Some #defines that are used for .c files.
if(streq(goos, "windows")) {
bwritestr(&out, bprintf(&b, "#define cb_max %d\n", MAXWINCB));
}
xgetenv(&exp, "GOEXPERIMENT");
bwritestr(&out, bprintf(&b, "#define GOEXPERIMENT \"%s\"\n", bstr(&exp)));
// Write both to file and to workdir/zasm_GOOS_GOARCH.h.
writefile(&out, file, 0);
writefile(&out, bprintf(&b, "%s/zasm_GOOS_GOARCH.h", workdir), 0);
bfree(&in);
bfree(&b);
bfree(&out);
bfree(&exp);
vfree(&argv);
vfree(&lines);
vfree(&fields);
}
