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Changed to an execution stack system for aliases and config files, and

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added error backtraces.
This commit is contained in:
Brian Koropoff 2002-03-18 23:39:03 +00:00
parent d7487a1344
commit 1683633042
1 changed files with 68 additions and 25 deletions
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93
libs/util/cmd.c
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@ -71,6 +71,10 @@ cmd_buffer_t *cmd_consolebuffer; // Console buffer
cmd_buffer_t *cmd_legacybuffer; // Server stuffcmd buffer with absolute backwards-compatibility
cmd_buffer_t *cmd_activebuffer; // Buffer currently being executed
dstring_t *cmd_backtrace;
qboolean cmd_error;
cvar_t *cmd_warncmd;
cvar_t *cmd_highchars;
@ -158,11 +162,25 @@ Cmd_Wait_f (void)
cur->wait = true;
}
void
Cmd_Error (const char *message)
{
cmd_buffer_t *cur;
Sys_Printf("GIB: Error in execution. Type backtrace for a description and execution path to the error\n");
cmd_error = true;
dstring_clearstr (cmd_backtrace);
dstring_appendstr (cmd_backtrace, message);
dstring_appendstr (cmd_backtrace, "Path of execution:\n");
for (cur = cmd_activebuffer; cur; cur = cur->prev)
dstring_appendstr (cmd_backtrace, va("--> %s\n", cur->realline->str));
}
/*
COMMAND BUFFER
*/
byte cmd_text_buf[8192];
//byte cmd_text_buf[8192];
void
Cbuf_Init (void)
@ -173,6 +191,8 @@ Cbuf_Init (void)
cmd_legacybuffer->legacy = true;
cmd_activebuffer = cmd_consolebuffer;
cmd_backtrace = dstring_newstr ();
}
@ -244,13 +264,9 @@ extract_line (dstring_t *buffer, dstring_t *line)
}
if (buffer->str[i] == '\n' || buffer->str[i] == '\r') {
if (braces) {
if (i && buffer->str[i-1] != ';')
buffer->str[i] = ';';
else {
dstring_snip(buffer, i, 1);
i--;
}
}
else
break;
}
@ -278,12 +294,14 @@ Cbuf_ExecuteBuffer (cmd_buffer_t *buffer)
cmd_buffer_t *temp = cmd_activebuffer; // save old context
cmd_activebuffer = buffer;
buffer->wait = false;
cmd_error = false;
while (strlen(buffer->buffer->str)) {
extract_line (buffer->buffer, buf);
Cmd_ExecuteString(buf->str, src_command);
if (buffer->wait) {
if (buffer->wait)
break;
if (cmd_error)
break;
}
dstring_clearstr(buf);
}
dstring_delete (buf);
@ -291,27 +309,43 @@ Cbuf_ExecuteBuffer (cmd_buffer_t *buffer)
}
void
Cbuf_Execute (void)
Cbuf_ExecuteStack (cmd_buffer_t *buffer)
{
qboolean wait = false;
cmd_buffer_t *cur;
// Execute the buffer stack first
while (cmd_consolebuffer->next) {
for (cur = cmd_consolebuffer; cur->next; cur=cur->next);
for (cur = buffer; cur->next; cur = cur->next);
for (;cur != buffer; cur = cur->prev) {
Cbuf_ExecuteBuffer (cur);
if (cur->wait) {
wait = true;
break;
}
else if (cmd_error)
break;
else {
cur->prev->next = 0;
Cmd_FreeBuffer (cur);
}
}
if (!wait)
Cbuf_ExecuteBuffer (cmd_consolebuffer); // Then console buffer
Cbuf_ExecuteBuffer (cmd_legacybuffer); // Then legacy/stufftext buffer
Cbuf_ExecuteBuffer (buffer);
if (cmd_error) { // If an error occured, nuke the entire stack
for (cur = buffer->next; cur; cur = cur->next)
Cmd_FreeBuffer(cur);
buffer->next = 0;
dstring_clearstr (buffer->buffer); // And the root buffer
}
}
/*
Executes both root buffers
*/
void Cbuf_Execute (void)
{
Cbuf_ExecuteStack (cmd_consolebuffer);
Cbuf_ExecuteStack (cmd_legacybuffer);
}
void Cmd_ExecuteSubroutine (const char *text)
@ -332,9 +366,11 @@ void Cmd_ExecuteSubroutine (const char *text)
Cbuf_Execute_Sets
Similar to Cbuf_Execute, but only
executes set and setrom commands. Used
for reading config files before the cmd
subsystem is entirely loaded.
executes set and setrom commands,
and only in the console buffer.
Used for reading config files
before the cmd subsystem is
entirely loaded.
*/
void
@ -931,6 +967,9 @@ Cmd_TokenizeString (const char *text, qboolean filter)
const char *str = text;
unsigned int cmd_argc = 0;
dstring_clearstr (cmd_activebuffer->realline);
dstring_appendstr (cmd_activebuffer->realline, text);
/* Turn off tags at the beginning of a command.
This causes tags to continue past token boundaries. */
tag_shift = 0;
@ -945,9 +984,9 @@ Cmd_TokenizeString (const char *text, qboolean filter)
}
len = Cmd_GetToken (str + i);
if (len < 0) {
Sys_Printf ("Parse error: Unmatched quotes, braces, or double quotes in following line:\n--> %s\n", text);
cmd_argc = 0;
break;
Cmd_Error ("Parse error: Unmatched quotes, braces, or double quotes\n");
cmd_activebuffer->argc = 0;
return;
}
else if (len == 0)
break;
@ -987,13 +1026,13 @@ Cmd_TokenizeString (const char *text, qboolean filter)
Cmd_ProcessVariables(cmd_activebuffer->argv[cmd_argc-1]);
res = Cmd_ProcessMath(cmd_activebuffer->argv[cmd_argc-1]);
if (res == -1) {
Sys_Printf("Parse error: Unmatched parenthesis in following line:\n--> %s\n", text);
cmd_argc = 0;
Cmd_Error ("Parse error: Unmatched parenthesis\n");
cmd_activebuffer->argc = 0;
return;
}
if (res == -2) {
Sys_Printf("Math error: Invalid math expression on the following line:\n--> %s\n", text);
cmd_argc = 0;
Cmd_Error("Math error: Invalid math expression\n");
cmd_activebuffer->argc = 0;
return;
}
}
@ -1010,8 +1049,6 @@ Cmd_TokenizeString (const char *text, qboolean filter)
cmd_activebuffer->args[i] = strlen(cmd_activebuffer->line->str);
dstring_appendstr (cmd_activebuffer->line, cmd_activebuffer->argv[i]->str);
}
dstring_clearstr (cmd_activebuffer->realline);
dstring_appendstr (cmd_activebuffer->realline, text);
cmd_activebuffer->argc = cmd_argc;
}
@ -1398,6 +1435,11 @@ Cmd_While_f (void) {
return;
}
void
Cmd_Backtrace_f (void)
{
Sys_Printf("%s", cmd_backtrace->str);
}
void
Cmd_Hash_Stats_f (void)
@ -1466,6 +1508,7 @@ Cmd_Init (void)
"variable");
Cmd_AddCommand ("if", Cmd_If_f, "Conditionally execute a set of commands.");
Cmd_AddCommand ("while", Cmd_While_f, "Execute a set of commands while a condition is true.");
Cmd_AddCommand ("backtrace", Cmd_Backtrace_f, "Show a description of the last GIB error and a backtrace.");
//Cmd_AddCommand ("cmd_hash_stats", Cmd_Hash_Stats_f, "Display statistics "
// "alias and command hash tables");
cmd_warncmd = Cvar_Get ("cmd_warncmd", "0", CVAR_NONE, NULL, "Toggles the "