From: oetiker Date: Fri, 11 Jun 2010 13:47:24 +0000 (+0000) Subject: update to the time_clean function by Jean-Edouard Babin X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=d67ce6022b311631183b9272c19c98947a46e23b;p=rrdtool.git update to the time_clean function by Jean-Edouard Babin git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@2088 a5681a0c-68f1-0310-ab6d-d61299d08faa --- diff --git a/src/rrd_graph.c b/src/rrd_graph.c index ef51b7c..dcfb3e6 100644 --- a/src/rrd_graph.c +++ b/src/rrd_graph.c @@ -5232,44 +5232,119 @@ void grinfo_push( } } + void time_clean( char *result, char *format) { int j, jj; +/* Handling based on + - ANSI C99 Specifications http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1124.pdf + - Single UNIX Specification version 2 http://www.opengroup.org/onlinepubs/007908799/xsh/strftime.html + - POSIX:2001/Single UNIX Specification version 3 http://www.opengroup.org/onlinepubs/009695399/functions/strftime.html + - POSIX:2008 Specifications http://www.opengroup.org/onlinepubs/9699919799/functions/strftime.html + Specifications tells + "If a conversion specifier is not one of the above, the behavior is undefined." + + C99 tells + "A conversion specifier consists of a % character, possibly followed by an E or O modifier character (described below), followed by a character that determines the behavior of the conversion specifier. + + POSIX:2001 tells + "A conversion specification consists of a '%' character, possibly followed by an E or O modifier, and a terminating conversion specifier character that determines the conversion specification's behavior." + + POSIX:2008 introduce more complexe behavior that are not handled here. + + According to this, this code will replace: + - % followed by @ by a %@ + - % followed by by a %SPACE + - % followed by . by a %. + - % followed by % by a % + - % followed by t by a TAB + - % followed by E then anything by '-' + - % followed by O then anything by '-' + - % followed by anything else by at least one '-'. More characters may be added to better fit expected output length +*/ + jj = 0; - for(j = 0; j < FMT_LEG_LEN - 1; j++) { /* we don't need to parse the last char */ + for(j = 0; (j < FMT_LEG_LEN - 1) && (jj < FMT_LEG_LEN); j++) { /* we don't need to parse the last char */ if (format[j] == '%') { - if ((format[j+1] == 'A') || (format[j+1] == 'a') || - (format[j+1] == 'B') || (format[j+1] == 'b') || - (format[j+1] == 'C') || (format[j+1] == 'c') || - (format[j+1] == 'D') || (format[j+1] == 'd') || - (format[j+1] == 'E') || (format[j+1] == 'e') || - (format[j+1] == 'F') || - (format[j+1] == 'G') || (format[j+1] == 'g') || - (format[j+1] == 'H') || (format[j+1] == 'h') || - (format[j+1] == 'I') || - (format[j+1] == 'j') || - (format[j+1] == 'k') || - (format[j+1] == 'l') || - (format[j+1] == 'M') || (format[j+1] == 'm') || - (format[j+1] == 'O') || - (format[j+1] == 'P') || (format[j+1] == 'p') || - (format[j+1] == 'R') || (format[j+1] == 'r') || - (format[j+1] == 'S') || (format[j+1] == 's') || - (format[j+1] == 'T') || - (format[j+1] == 'U') || (format[j+1] == 'u') || - (format[j+1] == 'V') || (format[j+1] == 'v') || - (format[j+1] == 'W') || (format[j+1] == 'w') || - (format[j+1] == 'X') || (format[j+1] == 'x') || - (format[j+1] == 'Y') || (format[j+1] == 'y') || - (format[j+1] == 'Z') || (format[j+1] == 'z') || - (format[j+1] == '+')) { + if ((format[j+1] == 'E') || (format[j+1] == 'O')) { result[jj++] = '-'; + j+=2; /* We skip next 2 following char */ + } else if ((format[j+1] == 'C') || (format[j+1] == 'd') || + (format[j+1] == 'g') || (format[j+1] == 'H') || + (format[j+1] == 'I') || (format[j+1] == 'm') || + (format[j+1] == 'M') || (format[j+1] == 'S') || + (format[j+1] == 'U') || (format[j+1] == 'V') || + (format[j+1] == 'W') || (format[j+1] == 'y')) { + result[jj++] = '-'; + if (jj < FMT_LEG_LEN) { + result[jj++] = '-'; + } j++; /* We skip the following char */ - } else if (format[j+1] == '%') { - result[jj++] = '%'; + } else if (format[j+1] == 'j') { + result[jj++] = '-'; + if (jj < FMT_LEG_LEN - 1) { + result[jj++] = '-'; + result[jj++] = '-'; + } + j++; /* We skip the following char */ + } else if ((format[j+1] == 'G') || (format[j+1] == 'Y')) { + /* Assuming Year on 4 digit */ + result[jj++] = '-'; + if (jj < FMT_LEG_LEN - 2) { + result[jj++] = '-'; + result[jj++] = '-'; + result[jj++] = '-'; + } + j++; /* We skip the following char */ + } else if (format[j+1] == 'R') { + result[jj++] = '-'; + if (jj < FMT_LEG_LEN - 3) { + result[jj++] = '-'; + result[jj++] = ':'; + result[jj++] = '-'; + result[jj++] = '-'; + } + j++; /* We skip the following char */ + } else if (format[j+1] == 'T') { + result[jj++] = '-'; + if (jj < FMT_LEG_LEN - 6) { + result[jj++] = '-'; + result[jj++] = ':'; + result[jj++] = '-'; + result[jj++] = '-'; + result[jj++] = ':'; + result[jj++] = '-'; + result[jj++] = '-'; + } + j++; /* We skip the following char */ + } else if (format[j+1] == 'F') { + result[jj++] = '-'; + if (jj < FMT_LEG_LEN - 8) { + result[jj++] = '-'; + result[jj++] = '-'; + result[jj++] = '-'; + result[jj++] = '-'; + result[jj++] = '-'; + result[jj++] = '-'; + result[jj++] = '-'; + result[jj++] = '-'; + result[jj++] = '-'; + } + j++; /* We skip the following char */ + } else if (format[j+1] == 'D') { + result[jj++] = '-'; + if (jj < FMT_LEG_LEN - 6) { + result[jj++] = '-'; + result[jj++] = '/'; + result[jj++] = '-'; + result[jj++] = '-'; + result[jj++] = '/'; + result[jj++] = '-'; + result[jj++] = '-'; + } j++; /* We skip the following char */ } else if (format[j+1] == 'n') { result[jj++] = '\r'; @@ -5278,11 +5353,33 @@ void time_clean( } else if (format[j+1] == 't') { result[jj++] = '\t'; j++; /* We skip the following char */ + } else if (format[j+1] == '%') { + result[jj++] = '%'; + j++; /* We skip the following char */ + } else if (format[j+1] == ' ') { + if (jj < FMT_LEG_LEN - 1) { + result[jj++] = '%'; + result[jj++] = ' '; + } + j++; /* We skip the following char */ + } else if (format[j+1] == '.') { + if (jj < FMT_LEG_LEN - 1) { + result[jj++] = '%'; + result[jj++] = '.'; + } + j++; /* We skip the following char */ + } else if (format[j+1] == '@') { + if (jj < FMT_LEG_LEN - 1) { + result[jj++] = '%'; + result[jj++] = '@'; + } + j++; /* We skip the following char */ } else { - result[jj++] = format[j]; + result[jj++] = '-'; + j++; /* We skip the following char */ } } else { - result[jj++] = format[j]; + result[jj++] = format[j]; } } result[jj] = '\0'; /* We must force the end of the string */