Remove forward declaration.

This commit is contained in:
Michael Drake 2012-08-14 11:23:03 +01:00
parent 19b3876ff2
commit 119b5cca3f

View File

@ -75,21 +75,6 @@ struct search_context {
struct list_entry *current; /* first for select all */ struct list_entry *current; /* first for select all */
}; };
static void search_text(const char *string, int string_len,
struct search_context *context, search_flags_t flags);
static const char *find_pattern(const char *string, int s_len,
const char *pattern, int p_len, bool case_sens,
unsigned int *m_len);
static bool find_occurrences_html(const char *pattern, int p_len,
struct box *cur, bool case_sens,
struct search_context *context);
static bool find_occurrences_text(const char *pattern, int p_len,
struct content *c, bool case_sens,
struct search_context *context);
static struct list_entry *add_entry(unsigned start_idx, unsigned end_idx,
struct search_context *context);
static void free_matches(struct search_context *context);
/** /**
* Find the browser window that contains the content associated with a search * Find the browser window that contains the content associated with a search
@ -174,58 +159,12 @@ struct search_context * search_create_context(hlcache_handle *h,
} }
/**
* Begins/continues the search process
* Note that this may be called many times for a single search.
*
* \param bw the browser_window to search in
* \param flags the flags forward/back etc
* \param string the string to match
*/
void search_step(struct search_context *context, search_flags_t flags,
const char *string)
{
int string_len;
int i = 0;
if ((context == NULL) || (context->callbacks == NULL)) {
warn_user("SearchError", 0);
return;
}
if (context->callbacks->add_recent != NULL)
context->callbacks->add_recent(string, context->p);
string_len = strlen(string);
for(i = 0; i < string_len; i++)
if (string[i] != '#' && string[i] != '*') break;
if (i >= string_len) {
union content_msg_data msg_data;
free_matches(context);
if (context->callbacks->status != NULL)
context->callbacks->status(true, context->p);
if (context->callbacks->back_state != NULL)
context->callbacks->back_state(false, context->p);
if (context->callbacks->forward_state != NULL)
context->callbacks->forward_state(false, context->p);
msg_data.scroll.area = false;
msg_data.scroll.x0 = 0;
msg_data.scroll.y0 = 0;
content_broadcast(context->c, CONTENT_MSG_SCROLL, msg_data);
return;
}
search_text(string, string_len, context, flags);
}
/** /**
* Release the memory used by the list of matches, * Release the memory used by the list of matches,
* deleting selection objects too * deleting selection objects too
*/ */
void free_matches(struct search_context *context) static void free_matches(struct search_context *context)
{ {
struct list_entry *a; struct list_entry *a;
struct list_entry *b; struct list_entry *b;
@ -249,13 +188,278 @@ void free_matches(struct search_context *context)
} }
} }
/**
* Find the first occurrence of 'match' in 'string' and return its index
*
* \param string the string to be searched (unterminated)
* \param s_len length of the string to be searched
* \param pattern the pattern for which we are searching (unterminated)
* \param p_len length of pattern
* \param case_sens true iff case sensitive match required
* \param m_len accepts length of match in bytes
* \return pointer to first match, NULL if none
*/
static const char *find_pattern(const char *string, int s_len,
const char *pattern, int p_len, bool case_sens,
unsigned int *m_len)
{
struct { const char *ss, *s, *p; bool first; } context[16];
const char *ep = pattern + p_len;
const char *es = string + s_len;
const char *p = pattern - 1; /* a virtual '*' before the pattern */
const char *ss = string;
const char *s = string;
bool first = true;
int top = 0;
while (p < ep) {
bool matches;
if (p < pattern || *p == '*') {
char ch;
/* skip any further asterisks; one is the same as many
*/
do p++; while (p < ep && *p == '*');
/* if we're at the end of the pattern, yes, it matches
*/
if (p >= ep) break;
/* anything matches a # so continue matching from
here, and stack a context that will try to match
the wildcard against the next character */
ch = *p;
if (ch != '#') {
/* scan forwards until we find a match for
this char */
if (!case_sens) ch = toupper(ch);
while (s < es) {
if (case_sens) {
if (*s == ch) break;
} else if (toupper(*s) == ch)
break;
s++;
}
}
if (s < es) {
/* remember where we are in case the match
fails; we may then resume */
if (top < (int)NOF_ELEMENTS(context)) {
context[top].ss = ss;
context[top].s = s + 1;
context[top].p = p - 1;
/* ptr to last asterisk */
context[top].first = first;
top++;
}
if (first) {
ss = s;
/* remember first non-'*' char */
first = false;
}
matches = true;
}
else
matches = false;
}
else if (s < es) {
char ch = *p;
if (ch == '#')
matches = true;
else {
if (case_sens)
matches = (*s == ch);
else
matches = (toupper(*s) == toupper(ch));
}
if (matches && first) {
ss = s; /* remember first non-'*' char */
first = false;
}
}
else
matches = false;
if (matches) {
p++; s++;
}
else {
/* doesn't match, resume with stacked context if we have one */
if (--top < 0) return NULL; /* no match, give up */
ss = context[top].ss;
s = context[top].s;
p = context[top].p;
first = context[top].first;
}
}
/* end of pattern reached */
*m_len = max(s - ss, 1);
return ss;
}
/**
* Add a new entry to the list of matches
*
* \param start_idx offset of match start within textual representation
* \param end_idx offset of match end
* \return pointer to added entry, NULL iff failed
*/
static struct list_entry *add_entry(unsigned start_idx, unsigned end_idx,
struct search_context *context)
{
struct list_entry *entry;
/* found string in box => add to list */
entry = calloc(1, sizeof(*entry));
if (!entry) {
warn_user("NoMemory", 0);
return NULL;
}
entry->start_idx = start_idx;
entry->end_idx = end_idx;
entry->sel = NULL;
entry->next = 0;
entry->prev = context->found->prev;
if (context->found->prev == NULL)
context->found->next = entry;
else
context->found->prev->next = entry;
context->found->prev = entry;
return entry;
}
/**
* Finds all occurrences of a given string in the html box tree
*
* \param pattern the string pattern to search for
* \param p_len pattern length
* \param cur pointer to the current box
* \param case_sens whether to perform a case sensitive search
* \return true on success, false on memory allocation failure
*/
static bool find_occurrences_html(const char *pattern, int p_len,
struct box *cur, bool case_sens,
struct search_context *context)
{
struct box *a;
/* ignore this box, if there's no visible text */
if (!cur->object && cur->text) {
const char *text = cur->text;
unsigned length = cur->length;
while (length > 0) {
struct list_entry *entry;
unsigned match_length;
unsigned match_offset;
const char *new_text;
const char *pos = find_pattern(text, length,
pattern, p_len, case_sens,
&match_length);
if (!pos) break;
/* found string in box => add to list */
match_offset = pos - cur->text;
entry = add_entry(cur->byte_offset + match_offset,
cur->byte_offset +
match_offset +
match_length, context);
if (!entry)
return false;
entry->start_box = cur;
entry->end_box = cur;
new_text = pos + match_length;
length -= (new_text - text);
text = new_text;
}
}
/* and recurse */
for (a = cur->children; a; a = a->next) {
if (!find_occurrences_html(pattern, p_len, a, case_sens,
context))
return false;
}
return true;
}
/**
* Finds all occurrences of a given string in a textplain content
*
* \param pattern the string pattern to search for
* \param p_len pattern length
* \param c the content to be searched
* \param case_sens wheteher to perform a case sensitive search
* \return true on success, false on memory allocation failure
*/
static bool find_occurrences_text(const char *pattern, int p_len,
struct content *c, bool case_sens,
struct search_context *context)
{
int nlines = textplain_line_count(c);
int line;
for(line = 0; line < nlines; line++) {
size_t offset, length;
const char *text = textplain_get_line(c, line,
&offset, &length);
if (text) {
while (length > 0) {
struct list_entry *entry;
unsigned match_length;
size_t start_idx;
const char *new_text;
const char *pos = find_pattern(text, length,
pattern, p_len, case_sens,
&match_length);
if (!pos) break;
/* found string in line => add to list */
start_idx = offset + (pos - text);
entry = add_entry(start_idx, start_idx +
match_length, context);
if (!entry)
return false;
new_text = pos + match_length;
offset += (new_text - text);
length -= (new_text - text);
text = new_text;
}
}
}
return true;
}
/** /**
* Search for a string in the box tree * Search for a string in the box tree
* *
* \param string the string to search for * \param string the string to search for
* \param string_len length of search string * \param string_len length of search string
*/ */
void search_text(const char *string, int string_len, static void search_text(const char *string, int string_len,
struct search_context *context, search_flags_t flags) struct search_context *context, search_flags_t flags)
{ {
struct rect bounds; struct rect bounds;
@ -383,228 +587,52 @@ void search_text(const char *string, int string_len,
content_broadcast(context->c, CONTENT_MSG_SCROLL, msg_data); content_broadcast(context->c, CONTENT_MSG_SCROLL, msg_data);
} }
/**
* Find the first occurrence of 'match' in 'string' and return its index
*
* \param string the string to be searched (unterminated)
* \param s_len length of the string to be searched
* \param pattern the pattern for which we are searching (unterminated)
* \param p_len length of pattern
* \param case_sens true iff case sensitive match required
* \param m_len accepts length of match in bytes
* \return pointer to first match, NULL if none
*/
const char *find_pattern(const char *string, int s_len, const char *pattern,
int p_len, bool case_sens, unsigned int *m_len)
{
struct { const char *ss, *s, *p; bool first; } context[16];
const char *ep = pattern + p_len;
const char *es = string + s_len;
const char *p = pattern - 1; /* a virtual '*' before the pattern */
const char *ss = string;
const char *s = string;
bool first = true;
int top = 0;
while (p < ep) {
bool matches;
if (p < pattern || *p == '*') {
char ch;
/* skip any further asterisks; one is the same as many
*/
do p++; while (p < ep && *p == '*');
/* if we're at the end of the pattern, yes, it matches
*/
if (p >= ep) break;
/* anything matches a # so continue matching from
here, and stack a context that will try to match
the wildcard against the next character */
ch = *p;
if (ch != '#') {
/* scan forwards until we find a match for
this char */
if (!case_sens) ch = toupper(ch);
while (s < es) {
if (case_sens) {
if (*s == ch) break;
} else if (toupper(*s) == ch)
break;
s++;
}
}
if (s < es) {
/* remember where we are in case the match
fails; we may then resume */
if (top < (int)NOF_ELEMENTS(context)) {
context[top].ss = ss;
context[top].s = s + 1;
context[top].p = p - 1;
/* ptr to last asterisk */
context[top].first = first;
top++;
}
if (first) {
ss = s;
/* remember first non-'*' char */
first = false;
}
matches = true;
}
else
matches = false;
}
else if (s < es) {
char ch = *p;
if (ch == '#')
matches = true;
else {
if (case_sens)
matches = (*s == ch);
else
matches = (toupper(*s) == toupper(ch));
}
if (matches && first) {
ss = s; /* remember first non-'*' char */
first = false;
}
}
else
matches = false;
if (matches) {
p++; s++;
}
else {
/* doesn't match, resume with stacked context if we have one */
if (--top < 0) return NULL; /* no match, give up */
ss = context[top].ss;
s = context[top].s;
p = context[top].p;
first = context[top].first;
}
}
/* end of pattern reached */
*m_len = max(s - ss, 1);
return ss;
}
/** /**
* Finds all occurrences of a given string in the html box tree * Begins/continues the search process
* Note that this may be called many times for a single search.
* *
* \param pattern the string pattern to search for * \param bw the browser_window to search in
* \param p_len pattern length * \param flags the flags forward/back etc
* \param cur pointer to the current box * \param string the string to match
* \param case_sens whether to perform a case sensitive search
* \return true on success, false on memory allocation failure
*/
bool find_occurrences_html(const char *pattern, int p_len, struct box *cur,
bool case_sens, struct search_context *context)
{
struct box *a;
/* ignore this box, if there's no visible text */
if (!cur->object && cur->text) {
const char *text = cur->text;
unsigned length = cur->length;
while (length > 0) {
struct list_entry *entry;
unsigned match_length;
unsigned match_offset;
const char *new_text;
const char *pos = find_pattern(text, length,
pattern, p_len, case_sens,
&match_length);
if (!pos) break;
/* found string in box => add to list */
match_offset = pos - cur->text;
entry = add_entry(cur->byte_offset + match_offset,
cur->byte_offset +
match_offset +
match_length, context);
if (!entry)
return false;
entry->start_box = cur;
entry->end_box = cur;
new_text = pos + match_length;
length -= (new_text - text);
text = new_text;
}
}
/* and recurse */
for (a = cur->children; a; a = a->next) {
if (!find_occurrences_html(pattern, p_len, a, case_sens,
context))
return false;
}
return true;
}
/**
* Finds all occurrences of a given string in a textplain content
*
* \param pattern the string pattern to search for
* \param p_len pattern length
* \param c the content to be searched
* \param case_sens wheteher to perform a case sensitive search
* \return true on success, false on memory allocation failure
*/ */
bool find_occurrences_text(const char *pattern, int p_len, void search_step(struct search_context *context, search_flags_t flags,
struct content *c, bool case_sens, const char *string)
struct search_context *context)
{ {
int nlines = textplain_line_count(c); int string_len;
int line; int i = 0;
for(line = 0; line < nlines; line++) { if ((context == NULL) || (context->callbacks == NULL)) {
size_t offset, length; warn_user("SearchError", 0);
const char *text = textplain_get_line(c, line, return;
&offset, &length);
if (text) {
while (length > 0) {
struct list_entry *entry;
unsigned match_length;
size_t start_idx;
const char *new_text;
const char *pos = find_pattern(text, length,
pattern, p_len, case_sens,
&match_length);
if (!pos) break;
/* found string in line => add to list */
start_idx = offset + (pos - text);
entry = add_entry(start_idx, start_idx +
match_length, context);
if (!entry)
return false;
new_text = pos + match_length;
offset += (new_text - text);
length -= (new_text - text);
text = new_text;
}
}
} }
return true; if (context->callbacks->add_recent != NULL)
context->callbacks->add_recent(string, context->p);
string_len = strlen(string);
for(i = 0; i < string_len; i++)
if (string[i] != '#' && string[i] != '*') break;
if (i >= string_len) {
union content_msg_data msg_data;
free_matches(context);
if (context->callbacks->status != NULL)
context->callbacks->status(true, context->p);
if (context->callbacks->back_state != NULL)
context->callbacks->back_state(false, context->p);
if (context->callbacks->forward_state != NULL)
context->callbacks->forward_state(false, context->p);
msg_data.scroll.area = false;
msg_data.scroll.x0 = 0;
msg_data.scroll.y0 = 0;
content_broadcast(context->c, CONTENT_MSG_SCROLL, msg_data);
return;
} }
search_text(string, string_len, context, flags);
}
/** /**
* Determines whether any portion of the given text box should be * Determines whether any portion of the given text box should be
@ -636,6 +664,7 @@ bool search_term_highlighted(struct content *c,
return false; return false;
} }
/** /**
* Specifies whether all matches or just the current match should * Specifies whether all matches or just the current match should
* be highlighted in the search text. * be highlighted in the search text.
@ -678,40 +707,6 @@ void search_show_all(bool all, struct search_context *context)
} }
} }
/**
* Add a new entry to the list of matches
*
* \param start_idx offset of match start within textual representation
* \param end_idx offset of match end
* \return pointer to added entry, NULL iff failed
*/
struct list_entry *add_entry(unsigned start_idx, unsigned end_idx,
struct search_context *context)
{
struct list_entry *entry;
/* found string in box => add to list */
entry = calloc(1, sizeof(*entry));
if (!entry) {
warn_user("NoMemory", 0);
return NULL;
}
entry->start_idx = start_idx;
entry->end_idx = end_idx;
entry->sel = NULL;
entry->next = 0;
entry->prev = context->found->prev;
if (context->found->prev == NULL)
context->found->next = entry;
else
context->found->prev->next = entry;
context->found->prev = entry;
return entry;
}
/** /**
* Ends the search process, invalidating all state * Ends the search process, invalidating all state
@ -742,4 +737,3 @@ void search_destroy_context(struct search_context *context)
free_matches(context); free_matches(context);
free(context); free(context);
} }