diff options
Diffstat (limited to 'src.scim2/help.c')
| -rwxr-xr-x | src.scim2/help.c | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/src.scim2/help.c b/src.scim2/help.c new file mode 100755 index 0000000..df4665c --- /dev/null +++ b/src.scim2/help.c @@ -0,0 +1,298 @@ +#include <curses.h> +#include <unistd.h> +#include <stdlib.h> +#include <fcntl.h> +#include <limits.h> +#include "sc.h" +#include "macros.h" +#include "screen.h" +#include "string.h" +#include "color.h" +#include "utils/string.h" +#include "help.h" +#include "conf.h" + +static char ** long_help; +static int delta = 0; +static int max; +static int look_result = -1; +static char word_looked[50] = ""; + +// Load the contents of help_doc into memory +int load_help () { + register FILE * f; + int line; + int c = 0, count = 0, max_width = COLS; + char helpfile_path[BUFFERSIZE]; + + // we try to read help file in HELP_PATH + sprintf(helpfile_path, "%s/%s_help", HELP_PATH, SNAME); + f = fopen(helpfile_path, "r"); + + // we try to read help file in current dir + if (! f ) { + f = fopen("./doc", "r"); + } + + // last change to read the help file ! + if (! f ) { + char cwd[PATH_MAX]; + extern char *exepath; + if (realpath(exepath, cwd) == NULL) return -1; + char * str_pos = strrchr(cwd, '/'); + if (str_pos == NULL) return -1; + cwd[str_pos - cwd + 1] = '\0'; + strcat(cwd, "doc"); + f = fopen(cwd, "r"); + } + + if (! f ) return -1; + + // Calculate number of elements in long_help + while ( (line = getc(f)) != -1) { + c++; + if (c >= COLS || line == '\n') { + c = 0; + if (max_width < c) max_width = c; + count++; + } + } + max = count; //max lines in entire help + + rewind(f); + + // Allocate memory for pointers and lines + long_help = (char **) malloc (sizeof(char *) * (count + 1)); + + // Load long_help + char word[max_width+1]; + word[0] = '\0'; + count = 0; + while ( (line = getc(f)) != -1) { + c++; + add_char(word, line, strlen(word)); + if (c >= COLS || line == '\n') { + c = 0; + long_help[count] = (char *) malloc (sizeof(char) * (strlen(word) + 1)); + strcpy(long_help[count], word); + count++; + word[0]='\0'; + } + } + long_help[count] = (char *) malloc (sizeof(char) * (strlen(word) + 1)); + strcpy(long_help[count], word); + + fclose(f); + return 0; +} + +// main function of help +void help() { + if (load_help() == -1) { + scerror("Cannot open help file"); + return; + } + delta = 0; + + wmove(input_win, 0,0); + wclrtobot(input_win); + wrefresh(input_win); + + set_ucolor(main_win, &ucolors[NORMAL]); + wtimeout(input_win, -1); + noecho(); + curs_set(0); + int quit_help_now = 0; + + int option; + + while( ! quit_help_now ) { + option = show_lines(); + look_result = -1; + + switch (option) { + + case OKEY_ENTER: + case OKEY_DOWN: + case 'j': + if (max >= delta + LINES - 1) delta++; + break; + + case OKEY_DEL: + case OKEY_UP: + case 'k': + if (delta) delta--; + break; + + case ' ': + if (max > delta + LINES + LINES) delta += LINES; + else if (max > delta + LINES) delta = max - 1 - LINES; + break; + + case ctl('b'): + if (delta - LINES/2 > 0) delta -= LINES/2; + else if (delta) delta = 0; + break; + + case ctl('f'): + if (delta + LINES + LINES/2 < max) delta += LINES/2; + else if (max > delta + LINES) delta = max - 1 - LINES; + break; + + case 'G': + delta = max - LINES + RESROW; + break; + + case ctl('a'): + delta = 0; + break; + + case 'n': + if (strlen(word_looked)) find_word(word_looked, 'f'); + break; + + case 'N': + if (strlen(word_looked)) find_word(word_looked, 'b'); + break; + + case ':': + curs_set(1); + char hline [100]; + hline[0]='\0'; + mvwprintw(input_win, 0, rescol, ":%s", hline); + wclrtoeol(input_win); + wrefresh(input_win); + + int d = wgetch(input_win); + while (d != OKEY_ENTER && d != OKEY_ESC) { + if (d == OKEY_BS) { + del_char(hline, strlen(hline) - 1); + } else { + sprintf(hline + strlen(hline), "%c", d); + } + mvwprintw(input_win, 0, rescol, ":%s", hline); + wclrtoeol(input_win); + wrefresh(input_win); + d = wgetch(input_win); + } + if (d == OKEY_ENTER && ( strcmp(hline, "q") == 0 || strcmp(hline, "quit") == 0 )) { + quit_help_now = TRUE; + } else if (d == OKEY_ESC) { + wmove(input_win, 0, rescol); + wclrtoeol(input_win); + wrefresh(input_win); + //d = wgetch(input_win); + } + curs_set(0); + break; + + case '/': + curs_set(1); + word_looked[0]='\0'; + mvwprintw(input_win, 0, rescol, "/%s", word_looked); + wrefresh(input_win); + d = wgetch(input_win); + while (d != OKEY_ENTER && d != OKEY_ESC) { + if (d == OKEY_BS) { + del_char(word_looked, strlen(word_looked) - 1); + } else { + //sprintf(word_looked, "%s%c", word_looked, d); + sprintf(word_looked + strlen(word_looked), "%c", d); + } + mvwprintw(input_win, 0, rescol, "/%s", word_looked); + wclrtoeol(input_win); + wrefresh(input_win); + d = wgetch(input_win); + } + + if (d == OKEY_ENTER && strlen(word_looked)) { + find_word(word_looked, 'f'); + } + mvwprintw(input_win, 0, rescol, ""); + wclrtoeol(input_win); + wrefresh(input_win); + curs_set(0); + break; + + case 'q': + quit_help_now = TRUE; + curs_set(0); + break; + + } + } + + // free memory allocated + for (delta = 0; delta <= max; delta++) { + free(long_help[delta]); + } + free(long_help); + + // go back to spreadsheet + wtimeout(input_win, TIMEOUT_CURSES); + wmove(input_win, 0,0); + wclrtobot(input_win); + wmove(main_win, 0,0); + wclrtobot(main_win); + wrefresh(main_win); +} + +void find_word(char * word, char order) { + int i; + if (order == 'f') { // forward + for (i = delta + 1; i < max - 1; i++) { + if ((look_result = str_in_str(long_help[i], word)) >= 0) { + delta = i; + //scinfo(""); + break; + } + } + } else if (order == 'b') { // backwards + for (i = delta - 1; i > 0; i--) { + if ((look_result = str_in_str(long_help[i], word)) >= 0) { + delta = i; + //scinfo(""); + break; + } + } + } + + if (look_result == -1) { + scinfo("Pattern not found."); + } + set_ucolor(input_win, &ucolors[NORMAL]); + return; +} + +int show_lines() { + int lineno, c = 0, bold = 0; + + for (lineno = 0; long_help[lineno + delta] && lineno < LINES - RESROW; lineno++) { + if (strlen(word_looked)) look_result = str_in_str(long_help[lineno + delta], word_looked); + + wmove(main_win, lineno, 0); + wclrtoeol(main_win); + + for (c = 0; c < strlen(long_help[lineno + delta]); c++) { + if (long_help[lineno + delta][c] == '&') bold = ! bold; + bold ? set_ucolor(main_win, &ucolors[CELL_SELECTION_SC]) : set_ucolor(main_win, &ucolors[NORMAL]); + + if (long_help[lineno + delta][c] == '&') { + set_ucolor(main_win, &ucolors[NORMAL]); + continue; + } else if (look_result != -1 && c >= look_result && + c < look_result + strlen(word_looked) ) { + set_ucolor(main_win, &ucolors[CELL_SELECTION_SC]); + } + mvwprintw(main_win, lineno, c, "%c", long_help[lineno + delta][c]); + } + wclrtoeol(main_win); + } + if (lineno < LINES) { + wmove(main_win, lineno+1, 0); + wclrtobot(main_win); + } + + (void) wrefresh(main_win); + return wgetch(input_win); +} |