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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <ctype.h>
#include "prof_int.h"
#define SECTION_SEP_CHAR '/'
#define STATE_INIT_COMMENT 1
#define STATE_STD_LINE 2
#define STATE_GET_OBRACE 3
struct parse_state {
int state;
int group_level;
struct profile_node *root_section;
struct profile_node *current_section;
};
static char *skip_over_blanks(cp)
char *cp;
{
while (*cp && isspace(*cp))
cp++;
return cp;
}
void strip_line(line)
char *line;
{
char *p;
while (1) {
p = line + strlen(line) - 1;
if ((*p == '\n') || (*p == '\r'))
*p = 0;
else
break;
}
}
static errcode_t parse_init_state(state)
struct parse_state *state;
{
state->state = STATE_INIT_COMMENT;
state->group_level = 0;
return profile_create_node("(root)", 0, &state->root_section);
}
static errcode_t parse_std_line(line, state)
char *line;
struct parse_state *state;
{
char *cp, ch, *tag, *value;
char *p;
errcode_t retval;
int do_subsection = 0;
void *iter = 0;
if (*line == 0)
return 0;
if (line[0] == ';')
return 0;
strip_line(line);
cp = skip_over_blanks(line);
ch = *cp;
if (ch == 0)
return 0;
if (ch == '[') {
if (state->group_level > 0)
return PROF_SECTION_NOTOP;
cp++;
p = strchr(cp, ']');
if (p == NULL)
return PROF_SECTION_SYNTAX;
*p = '\0';
retval = profile_find_node_subsection(state->root_section,
cp, &iter, 0,
&state->current_section);
if (retval == PROF_NO_SECTION) {
retval = profile_add_node(state->root_section,
cp, 0,
&state->current_section);
if (retval)
return retval;
} else if (retval)
return retval;
/*
* Finish off the rest of the line.
*/
cp = p+1;
if (*cp)
return PROF_SECTION_SYNTAX;
return 0;
}
if (ch == '}') {
if (state->group_level == 0)
return PROF_EXTRA_CBRACE;
retval = profile_get_node_parent(state->current_section,
&state->current_section);
if (retval)
return retval;
state->group_level--;
return 0;
}
/*
* Parse the relations
*/
p = strchr(cp, ' ');
if (!p)
return PROF_RELATION_SYNTAX;
*p = '\0';
tag = cp;
cp = skip_over_blanks(p+1);
if (*cp != '=')
return PROF_RELATION_SYNTAX;
cp = skip_over_blanks(cp+1);
value = cp;
if (value[0] == 0) {
do_subsection++;
state->state = STATE_GET_OBRACE;
}
if (value[0] == '{' && value[1] == 0)
do_subsection++;
if (do_subsection) {
retval = profile_add_node(state->current_section,
tag, 0, &state->current_section);
if (retval)
return retval;
state->group_level++;
return 0;
}
profile_add_node(state->current_section, tag, value, 0);
return 0;
}
errcode_t parse_line(line, state)
char *line;
struct parse_state *state;
{
char *cp;
switch (state->state) {
case STATE_INIT_COMMENT:
if (line[0] != '[')
return 0;
state->state = STATE_STD_LINE;
case STATE_STD_LINE:
return parse_std_line(line, state);
case STATE_GET_OBRACE:
cp = skip_over_blanks(line);
if (*cp != '{')
return PROF_MISSING_OBRACE;
state->state = STATE_STD_LINE;
}
return 0;
}
errcode_t profile_parse_file(f, root)
FILE *f;
struct profile_node **root;
{
#define BUF_SIZE 2048
char *bptr;
errcode_t retval;
struct parse_state state;
bptr = malloc (BUF_SIZE);
if (!bptr)
return ENOMEM;
retval = parse_init_state(&state);
if (retval) {
free (bptr);
return retval;
}
while (!feof(f)) {
if (fgets(bptr, BUF_SIZE, f) == NULL)
break;
retval = parse_line(bptr, &state);
if (retval) {
free (bptr);
return retval;
}
}
*root = state.root_section;
free (bptr);
return 0;
}
#ifndef _WINDOWS
void dump_profile(root, level)
struct profile_node *root;
int level;
{
int i;
struct profile_node *p;
void *iter;
long retval;
char *name, *value;
iter = 0;
do {
retval = profile_find_node_relation(root, 0, &iter,
&name, &value);
if (retval)
break;
for (i=0; i < level; i++)
printf(" ");
printf("%s = '%s'\n", name, value);
} while (iter != 0);
iter = 0;
do {
retval = profile_find_node_subsection(root, 0, &iter,
&name, &p);
if (retval)
break;
for (i=0; i < level; i++)
printf(" ");
printf("[%s]\n", name);
dump_profile(p, level+1);
} while (iter != 0);
}
#endif /* ! _WINDOWS */
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