From 8eaeefb04c966dc32bc39b451842ef16648b1048 Mon Sep 17 00:00:00 2001 From: Francois Fleuret Date: Sat, 27 Jun 2009 13:46:00 +0200 Subject: [PATCH] Starting to convert to basic C. --- selector.cc | 200 +++++++++++++++++++++++++++------------------------- 1 file changed, 104 insertions(+), 96 deletions(-) diff --git a/selector.cc b/selector.cc index 2dadb5d..fb08373 100644 --- a/selector.cc +++ b/selector.cc @@ -25,8 +25,8 @@ // To use it as a super-history-search for bash: // selector -q -b -i -d -v -w -l ${HISTSIZE} <(history) -#include -#include +// #include +// #include #include #include @@ -37,6 +37,7 @@ #include #include #include +#include using namespace std; @@ -88,10 +89,8 @@ void inject_into_tty_buffer(char *string) { void check_opt(int argc, char **argv, int n_opt, int n, const char *help) { if(n_opt + n >= argc) { - cerr << "Missing argument for " << argv[n_opt] << "." - << " " - << "Expecting " << help << "." - << endl; + fprintf(stderr, "Missing argument for %s, expecting %s.\n", + argv[n_opt], help); exit(1); } } @@ -109,7 +108,7 @@ int string_to_positive_integer(char *string) { } else error = 1; if(error) { - cerr << "Value `" << string << "' is not a positive integer." << endl; + fprintf(stderr, "Value `%s' is not a positive integer.\n", string); exit(1); } @@ -566,69 +565,83 @@ void read_file(const char *input_filename, int nb_lines_max, int *nb_lines, char **lines, int hash_table_size, int *hash_table) { - char raw_line[buffer_size];; + char raw_line[buffer_size]; - ifstream file(input_filename); + FILE *file = fopen(input_filename, "r"); - if(file.fail()) { - cerr << "Can not open " << input_filename << endl; + if(!file) { + fprintf(stderr, "Can not open `%s'.\n", input_filename); exit(1); } - while(*nb_lines < nb_lines_max && !file.eof()) { + int start = 0, end = 0; - file.getline(raw_line, buffer_size); + while(*nb_lines < nb_lines_max && (end > start || !feof(file))) { + int eol = start; + while(eol < end && raw_line[eol] != '\n') eol++; - if(raw_line[0]) { - - if(file.fail()) { - cerr << "Line too long:" << endl; - cerr << raw_line << endl; - exit(1); + if(eol == end) { + for(int k = 0; k < end - start; k++) { + raw_line[k] = raw_line[k + start]; } + end -= start; + eol -= start; + start = 0; + end += fread(raw_line + end, sizeof(char), buffer_size - end, file); + while(eol < end && raw_line[eol] != '\n') eol++; + } - char *t; + if(eol == buffer_size) { + raw_line[buffer_size - 1] = '\0'; + fprintf(stderr, "Line too long:\n"); + fprintf(stderr, raw_line); + fprintf(stderr, "\n"); + exit(1); + } - t = raw_line; + raw_line[eol] = '\0'; - // Remove the zsh history prefix + char *t = raw_line + start; - if(zsh_history && *t == ':') { - while(*t && *t != ';') t++; - if(*t == ';') t++; - } + // Remove the zsh history prefix - // Remove the bash history prefix + if(zsh_history && *t == ':') { + while(*t && *t != ';') t++; + if(*t == ';') t++; + } - if(bash_history) { - while(*t == ' ') t++; - while(*t >= '0' && *t <= '9') t++; - while(*t == ' ') t++; - } + // Remove the bash history prefix - // Check for duplicates with the hash table and insert the line - // in the list if necessary + if(bash_history) { + while(*t == ' ') t++; + while(*t >= '0' && *t <= '9') t++; + while(*t == ' ') t++; + } - int dup; + // Check for duplicates with the hash table and insert the line + // in the list if necessary - if(hash_table) { - dup = test_and_add(t, *nb_lines, lines, hash_table, hash_table_size); - } else { - dup = -1; - } + int dup; - if(dup < 0) { - lines[*nb_lines] = new char[strlen(t) + 1]; - strcpy(lines[*nb_lines], t); - } else { - // The string was already in there, so we do not allocate a - // new string but use the pointer to the first occurence of it - lines[*nb_lines] = lines[dup]; - lines[dup] = 0; - } + if(hash_table) { + dup = test_and_add(t, *nb_lines, lines, hash_table, hash_table_size); + } else { + dup = -1; + } - (*nb_lines)++; + if(dup < 0) { + lines[*nb_lines] = new char[strlen(t) + 1]; + strcpy(lines[*nb_lines], t); + } else { + // The string was already in there, so we do not allocate a + // new string but use the pointer to the first occurence of it + lines[*nb_lines] = lines[dup]; + lines[dup] = 0; } + + (*nb_lines)++; + + start = eol + 1; } } @@ -637,7 +650,7 @@ void read_file(const char *input_filename, int main(int argc, char **argv) { if(!ttyname(STDIN_FILENO)) { - cerr << "The standard input is not a tty." << endl; + fprintf(stderr, "The standard input is not a tty.\n"); exit(1); } @@ -770,45 +783,41 @@ int main(int argc, char **argv) { } else { - cerr << "Unknown option " << argv[i] << "." << endl; + fprintf(stderr, "Unknown option %s.\n", argv[i]); error = 1; } } if(show_help || error) { - cerr << "Selector version " << VERSION << "-R" << REVISION_NUMBER - << endl - << "Written by Francois Fleuret ." - << endl - << endl - << "Usage: " << argv[0] << " [options] [ [ ...]]" << endl - << endl - << " -h show this help" << endl - << " -v inject the selected line in the tty" << endl - << " -w quote control characters with ^Qs when using -v" << endl - << " -d remove duplicated lines" << endl - << " -b remove the bash history line prefix" << endl - << " -z remove the zsh history line prefix" << endl - << " -i invert the order of lines" << endl - << " -e start in regexp mode" << endl - << " -a start in case sensitive mode" << endl - << " -m monochrome mode" << endl - << " -q make a flash instead of a beep on an edition error" << endl - << " -- all following arguments are filenames" << endl - << " -t " << endl - << " add a title in the modeline" << endl - << " -c <fg modeline> <bg modeline> <fg highlight> <bg highlight>" << endl - << " set the display colors" << endl - << " -o <output filename>" << endl - << " set a file to write the selected line to" << endl - << " -s <pattern separator>" << endl - << " set the symbol to separate substrings in the pattern" << endl - << " -x <label separator>" << endl - << " set the symbol to terminate the label" << endl - << " -l <max number of lines>" << endl - << " set the maximum number of lines to take into account" << endl - << endl; - + fprintf(stderr, "Selector version %s-R%s\n", VERSION, REVISION_NUMBER); + fprintf(stderr, "Written by Francois Fleuret <francois@fleuret.org>.\n"); + fprintf(stderr, "Usage: %s [options] [<filename1> [<filename2> ...]]\n", argv[0]); + fprintf(stderr, "\n"); + fprintf(stderr, " -h show this help\n"); + fprintf(stderr, " -v inject the selected line in the tty\n"); + fprintf(stderr, " -w quote control characters with ^Qs when using -v\n"); + fprintf(stderr, " -d remove duplicated lines\n"); + fprintf(stderr, " -b remove the bash history line prefix\n"); + fprintf(stderr, " -z remove the zsh history line prefix\n"); + fprintf(stderr, " -i invert the order of lines\n"); + fprintf(stderr, " -e start in regexp mode\n"); + fprintf(stderr, " -a start in case sensitive mode\n"); + fprintf(stderr, " -m monochrome mode\n"); + fprintf(stderr, " -q make a flash instead of a beep on an edition error\n"); + fprintf(stderr, " -- all following arguments are filenames\n"); + fprintf(stderr, " -t <title>\n"); + fprintf(stderr, " add a title in the modeline\n"); + fprintf(stderr, " -c <fg modeline> <bg modeline> <fg highlight> <bg highlight>\n"); + fprintf(stderr, " set the display colors\n"); + fprintf(stderr, " -o <output filename>\n"); + fprintf(stderr, " set a file to write the selected line to\n"); + fprintf(stderr, " -s <pattern separator>\n"); + fprintf(stderr, " set the symbol to separate substrings in the pattern\n"); + fprintf(stderr, " -x <label separator>\n"); + fprintf(stderr, " set the symbol to terminate the label\n"); + fprintf(stderr, " -l <max number of lines>\n"); + fprintf(stderr, " set the maximum number of lines to take into account\n"); + fprintf(stderr, "\n"); exit(error); } @@ -912,7 +921,7 @@ int main(int argc, char **argv) { color_bg_highlight < 0 || color_bg_highlight >= COLORS) { echo(); endwin(); - cerr << "Color numbers have to be between 0 and " << COLORS - 1 << "." << endl; + fprintf(stderr, "Color numbers have to be between 0 and %d.\n", COLORS - 1); exit(1); } @@ -1056,22 +1065,21 @@ int main(int argc, char **argv) { } if(output_filename[0]) { - ofstream out(output_filename); - if(out.fail()) { - cerr << "Can not open " << output_filename << " for writing." << endl; - exit(1); - } else { + FILE *out = fopen(output_filename, "w"); + if(out) { if(t) { - out << t << endl; - } else { - out << endl; + fprintf(out, t); } + fprintf(out, "\n"); + } else { + fprintf(stderr, "Can not open %s for writing.\n", output_filename); + exit(1); } - out.flush(); + fclose(out); } } else { - cout << "Aborted." << endl; + printf("Aborted.\n"); } for(int l = 0; l < nb_lines; l++) { -- 2.39.5