/* Render layout in a specified format to an open FILE */
int gvRender(GVC_t *gvc, graph_t *g, const char *format, FILE *out)
{
int rc;
GVJ_t *job;
g = g->root;
/* create a job for the required format */
rc = gvjobs_output_langname(gvc, format);
job = gvc->job;
if (rc == NO_SUPPORT) {
agerr (AGERR, "Format: \"%s\" not recognized. Use one of:%s\n",
format, gvplugin_list(gvc, API_device, format));
return -1;
}
job->output_lang = gvrender_select(job, job->output_langname);
if (!LAYOUT_DONE(g) && !(job->flags & LAYOUT_NOT_REQUIRED)) {
agerrorf( "Layout was not done\n");
return -1;
}
job->output_file = out;
if (out == NULL)
job->flags |= OUTPUT_NOT_REQUIRED;
rc = gvRenderJobs(gvc, g);
gvrender_end_job(job);
gvjobs_delete(gvc);
return rc;
}
/* Render layout in a specified format to an external context */
int gvRenderContext(GVC_t *gvc, graph_t *g, const char *format, void *context)
{
int rc;
GVJ_t *job;
g = g->root;
/* create a job for the required format */
rc = gvjobs_output_langname(gvc, format);
job = gvc->job;
if (rc == NO_SUPPORT) {
agerr(AGERR, "Format: \"%s\" not recognized. Use one of:%s\n",
format, gvplugin_list(gvc, API_device, format));
return -1;
}
job->output_lang = gvrender_select(job, job->output_langname);
if (!GD_drawing(g) && !(job->flags & LAYOUT_NOT_REQUIRED)) {
fprintf(stderr, "Layout was not done\n");
return -1;
}
job->context = context;
job->external_context = TRUE;
gvRenderJobs(gvc, g);
gvrender_end_job(job);
gvdevice_finalize(job);
gvjobs_delete(gvc);
return 0;
}
/* Render layout in a specified format to a malloc'ed string */
int gvRenderData(GVC_t *gvc, graph_t *g, const char *format, char **result, unsigned int *length)
{
int rc;
GVJ_t *job;
g = g->root;
/* create a job for the required format */
rc = gvjobs_output_langname(gvc, format);
job = gvc->job;
if (rc == NO_SUPPORT) {
agerr(AGERR, "Format: \"%s\" not recognized. Use one of:%s\n",
format, gvplugin_list(gvc, API_device, format));
return -1;
}
job->output_lang = gvrender_select(job, job->output_langname);
if (!LAYOUT_DONE(g) && !(job->flags & LAYOUT_NOT_REQUIRED)) {
agerrorf( "Layout was not done\n");
return -1;
}
/* page size on Linux, Mac OS X and Windows */
#define OUTPUT_DATA_INITIAL_ALLOCATION 4096
if(!result || !(*result = malloc(OUTPUT_DATA_INITIAL_ALLOCATION))) {
agerr(AGERR, "failure malloc'ing for result string");
return -1;
}
job->output_data = *result;
job->output_data_allocated = OUTPUT_DATA_INITIAL_ALLOCATION;
job->output_data_position = 0;
rc = gvRenderJobs(gvc, g);
gvrender_end_job(job);
if (rc == 0) {
*result = job->output_data;
*length = job->output_data_position;
}
gvjobs_delete(gvc);
return rc;
}
/* dotneato_args_initialize"
* Scan argv[] for allowed flags.
* Return 0 on success; v+1 if calling function should call exit(v).
* If -c is set, config file is created and we exit.
*/
int dotneato_args_initialize(GVC_t * gvc, int argc, char **argv)
{
char c, *rest, *layout;
const char *val;
int i, v, nfiles;
unsigned char buf[SMALLBUF];
agxbuf xb;
int Kflag = 0;
/* establish if we are running in a CGI environment */
HTTPServerEnVar = getenv("SERVER_NAME");
/* establish Gvfilepath, if any */
Gvfilepath = getenv("GV_FILE_PATH");
gvc->common.cmdname = dotneato_basename(argv[0]);
if (gvc->common.verbose) {
fprintf(stderr, "%s - %s version %s (%s)\n",
gvc->common.cmdname, gvc->common.info[0],
gvc->common.info[1], gvc->common.info[2]);
}
/* configure for available plugins */
/* needs to know if "dot -c" is set (gvc->common.config) */
/* must happen before trying to select any plugins */
if (gvc->common.config) {
gvconfig(gvc, gvc->common.config);
exit (0);
}
/* feed the globals */
Verbose = gvc->common.verbose;
CmdName = gvc->common.cmdname;
nfiles = 0;
for (i = 1; i < argc; i++)
if (argv[i] && argv[i][0] != '-')
nfiles++;
gvc->input_filenames = N_NEW(nfiles + 1, char *);
nfiles = 0;
agxbinit(&xb, SMALLBUF, buf);
for (i = 1; i < argc; i++) {
if (argv[i] && argv[i][0] == '-') {
rest = &(argv[i][2]);
switch (c = argv[i][1]) {
case 'G':
if (*rest)
global_def(&xb, rest, AGRAPH, agattr);
else {
fprintf(stderr, "Missing argument for -G flag\n");
return (dotneato_usage(1));
}
break;
case 'N':
if (*rest)
global_def(&xb, rest, AGNODE,agattr);
else {
fprintf(stderr, "Missing argument for -N flag\n");
return (dotneato_usage(1));
}
break;
case 'E':
if (*rest)
global_def(&xb, rest, AGEDGE,agattr);
else {
fprintf(stderr, "Missing argument for -E flag\n");
return (dotneato_usage(1));
}
break;
case 'T':
val = getFlagOpt(argc, argv, &i);
if (!val) {
fprintf(stderr, "Missing argument for -T flag\n");
return (dotneato_usage(1));
}
v = gvjobs_output_langname(gvc, val);
if (!v) {
fprintf(stderr, "Format: \"%s\" not recognized. Use one of:%s\n",
val, gvplugin_list(gvc, API_device, val));
if (GvExitOnUsage) exit(1);
return(2);
}
break;
case 'K':
val = getFlagOpt(argc, argv, &i);
if (!val) {
fprintf(stderr, "Missing argument for -K flag\n");
return (dotneato_usage(1));
}
v = gvlayout_select(gvc, val);
if (v == NO_SUPPORT) {
fprintf(stderr, "There is no layout engine support for \"%s\"\n", val);
if (streq(val, "dot")) {
fprintf(stderr, "Perhaps \"dot -c\" needs to be run (with installer's privileges) to register the plugins?\n");
}
else {
fprintf(stderr, "Use one of:%s\n",
gvplugin_list(gvc, API_layout, val));
}
if (GvExitOnUsage) exit(1);
return(2);
}
Kflag = 1;
break;
case 'P':
P_graph = gvplugin_graph(gvc);
break;
case 'V':
fprintf(stderr, "%s - %s version %s (%s)\n",
gvc->common.cmdname, gvc->common.info[0],
gvc->common.info[1], gvc->common.info[2]);
if (GvExitOnUsage) exit(0);
return (1);
break;
case 'l':
val = getFlagOpt(argc, argv, &i);
if (!val) {
fprintf(stderr, "Missing argument for -l flag\n");
return (dotneato_usage(1));
}
use_library(gvc, val);
break;
case 'o':
val = getFlagOpt(argc, argv, &i);
if (! gvc->common.auto_outfile_names)
gvjobs_output_filename(gvc, val);
break;
case 'q':
if (*rest) {
v = atoi(rest);
if (v <= 0) {
fprintf(stderr,
"Invalid parameter \"%s\" for -q flag - ignored\n",
rest);
} else if (v == 1)
agseterr(AGERR);
else
agseterr(AGMAX);
} else
agseterr(AGERR);
break;
case 's':
if (*rest) {
PSinputscale = atof(rest);
if (PSinputscale < 0) {
fprintf(stderr,
"Invalid parameter \"%s\" for -s flag\n",
rest);
return (dotneato_usage(1));
}
else if (PSinputscale == 0)
PSinputscale = POINTS_PER_INCH;
} else
PSinputscale = POINTS_PER_INCH;
break;
case 'x':
Reduce = TRUE;
break;
case 'y':
Y_invert = TRUE;
break;
case '?':
return (dotneato_usage(0));
break;
default:
agerr(AGERR, "%s: option -%c unrecognized\n\n", gvc->common.cmdname,
c);
return (dotneato_usage(1));
}
} else if (argv[i])
gvc->input_filenames[nfiles++] = argv[i];
}
agxbfree (&xb);
/* if no -K, use cmd name to set layout type */
if (!Kflag) {
layout = gvc->common.cmdname;
if (streq(layout, "dot_static")
|| streq(layout, "dot_builtins")
|| streq(layout, "lt-dot")
|| streq(layout, "lt-dot_builtins")
|| streq(layout, "") /* when run as a process from Gvedit on Windows */
)
layout = "dot";
i = gvlayout_select(gvc, layout);
if (i == NO_SUPPORT) {
fprintf(stderr, "There is no layout engine support for \"%s\"\n", layout);
if (streq(layout, "dot"))
fprintf(stderr, "Perhaps \"dot -c\" needs to be run (with installer's privileges) to register the plugins?\n");
else
fprintf(stderr, "Use one of:%s\n", gvplugin_list(gvc, API_layout, ""));
if (GvExitOnUsage) exit(1);
return(2);
}
}
/* if no -Txxx, then set default format */
if (!gvc->jobs || !gvc->jobs->output_langname) {
v = gvjobs_output_langname(gvc, "dot");
if (!v) {
// assert(v); /* "dot" should always be available as an output format */
fprintf(stderr,
"Unable to find even the default \"-Tdot\" renderer. Has the config\nfile been generated by running \"dot -c\" with installer's priviledges?\n");
return(2);
}
}
/* set persistent attributes here (if not already set from command line options) */
if (!agattr(NULL, AGNODE, "label", 0))
agattr(NULL, AGNODE, "label", NODENAME_ESC);
return 0;
}
void dotneato_args_initialize(GVC_t * gvc, int argc, char **argv)
{
char *rest, c, *val;
int i, v, nfiles;
/* establish if we are running in a CGI environment */
HTTPServerEnVar = getenv("SERVER_NAME");
/* establish Gvfilepath, if any */
Gvfilepath = getenv("GV_FILE_PATH");
/* configure for available plugins and codegens */
gvconfig(gvc, gvc->common.config);
if (gvc->common.config)
exit (0);
gvc->common.cmdname = dotneato_basename(argv[0]);
i = gvlayout_select(gvc, gvc->common.cmdname);
if (i == NO_SUPPORT)
gvlayout_select(gvc, "dot");
/* feed the globals */
Verbose = gvc->common.verbose;
CmdName = gvc->common.cmdname;
aginit();
nfiles = 0;
for (i = 1; i < argc; i++)
if (argv[i] && argv[i][0] != '-')
nfiles++;
gvc->input_filenames = N_NEW(nfiles + 1, char *);
nfiles = 0;
for (i = 1; i < argc; i++) {
if (argv[i] && argv[i][0] == '-') {
rest = &(argv[i][2]);
switch (c = argv[i][1]) {
case 'G':
if (*rest)
global_def(rest, agraphattr);
else {
fprintf(stderr, "Missing argument for -G flag\n");
dotneato_usage(1);
}
break;
case 'N':
if (*rest)
global_def(rest, agnodeattr);
else {
fprintf(stderr, "Missing argument for -N flag\n");
dotneato_usage(1);
}
break;
case 'E':
if (*rest)
global_def(rest, agedgeattr);
else {
fprintf(stderr, "Missing argument for -E flag\n");
dotneato_usage(1);
}
break;
case 'T':
val = getFlagOpt(argc, argv, &i);
if (!val) {
fprintf(stderr, "Missing argument for -T flag\n");
dotneato_usage(1);
exit(1);
}
v = gvjobs_output_langname(gvc, val);
if (!v) {
fprintf(stderr, "Format: \"%s\" not recognized. Use one of:%s\n",
val, gvplugin_list(gvc, API_device, val));
exit(1);
}
break;
case 'K':
val = getFlagOpt(argc, argv, &i);
if (!val) {
fprintf(stderr, "Missing argument for -K flag\n");
dotneato_usage(1);
exit(1);
}
v = gvlayout_select(gvc, val);
if (v == NO_SUPPORT) {
fprintf(stderr, "Layout type: \"%s\" not recognized. Use one of:%s\n",
val, gvplugin_list(gvc, API_layout, val));
exit(1);
}
break;
case 'V':
fprintf(stderr, "%s - %s version %s (%s)\n",
gvc->common.cmdname, gvc->common.info[0],
gvc->common.info[1], gvc->common.info[2]);
exit(0);
break;
case 'l':
val = getFlagOpt(argc, argv, &i);
if (!val) {
fprintf(stderr, "Missing argument for -l flag\n");
dotneato_usage(1);
}
use_library(gvc, val);
break;
case 'o':
val = getFlagOpt(argc, argv, &i);
if (! gvc->common.auto_outfile_names)
gvjobs_output_filename(gvc, val);
break;
case 'q':
if (*rest) {
v = atoi(rest);
if (v <= 0) {
fprintf(stderr,
"Invalid parameter \"%s\" for -q flag - ignored\n",
rest);
} else if (v == 1)
agseterr(AGERR);
else
agseterr(AGMAX);
} else
agseterr(AGERR);
break;
case 's':
if (*rest) {
PSinputscale = atof(rest);
if (PSinputscale <= 0) {
fprintf(stderr,
"Invalid parameter \"%s\" for -s flag\n",
rest);
dotneato_usage(1);
}
} else
PSinputscale = POINTS_PER_INCH;
break;
case 'x':
Reduce = TRUE;
break;
case 'y':
Y_invert = TRUE;
break;
case '?':
dotneato_usage(0);
break;
default:
fprintf(stderr, "%s: option -%c unrecognized\n\n", gvc->common.cmdname,
c);
dotneato_usage(1);
}
} else if (argv[i])
gvc->input_filenames[nfiles++] = argv[i];
}
/* if no -Txxx, then set default format */
if (!gvc->jobs || !gvc->jobs->output_langname) {
v = gvjobs_output_langname(gvc, "dot");
assert(v); /* "dot" should always be available as an output format */
}
/* set persistent attributes here (if not already set from command line options) */
if (!(agfindattr(agprotograph()->proto->n, "label")))
agnodeattr(NULL, "label", NODENAME_ESC);
}
