From 1746898cefcb17f58b5cf27b4dad3d28236f1152 Mon Sep 17 00:00:00 2001 From: Lennart Weller Date: Mon, 5 Sep 2016 10:27:21 +0200 Subject: Imported Upstream version 1.3.0+dfsg --- src/web_buffer_svg.c | 616 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 616 insertions(+) create mode 100644 src/web_buffer_svg.c (limited to 'src/web_buffer_svg.c') diff --git a/src/web_buffer_svg.c b/src/web_buffer_svg.c new file mode 100644 index 000000000..2f7627cc5 --- /dev/null +++ b/src/web_buffer_svg.c @@ -0,0 +1,616 @@ +#include "common.h" + +#define BADGE_HORIZONTAL_PADDING 4 +#define VERDANA_KERNING 0.2 +#define VERDANA_PADDING 1.0 + +/* + * verdana11_widths[] has been generated with this method: + * https://github.com/badges/shields/blob/master/measure-text.js +*/ + +double verdana11_widths[256] = { + [0] = 0.0, + [1] = 0.0, + [2] = 0.0, + [3] = 0.0, + [4] = 0.0, + [5] = 0.0, + [6] = 0.0, + [7] = 0.0, + [8] = 0.0, + [9] = 0.0, + [10] = 0.0, + [11] = 0.0, + [12] = 0.0, + [13] = 0.0, + [14] = 0.0, + [15] = 0.0, + [16] = 0.0, + [17] = 0.0, + [18] = 0.0, + [19] = 0.0, + [20] = 0.0, + [21] = 0.0, + [22] = 0.0, + [23] = 0.0, + [24] = 0.0, + [25] = 0.0, + [26] = 0.0, + [27] = 0.0, + [28] = 0.0, + [29] = 0.0, + [30] = 0.0, + [31] = 0.0, + [32] = 3.8671874999999996, // + [33] = 4.3291015625, // ! + [34] = 5.048828125, // " + [35] = 9.001953125, // # + [36] = 6.9931640625, // $ + [37] = 11.837890625, // % + [38] = 7.992187499999999, // & + [39] = 2.9541015625, // ' + [40] = 4.9951171875, // ( + [41] = 4.9951171875, // ) + [42] = 6.9931640625, // * + [43] = 9.001953125, // + + [44] = 4.00146484375, // , + [45] = 4.9951171875, // - + [46] = 4.00146484375, // . + [47] = 4.9951171875, // / + [48] = 6.9931640625, // 0 + [49] = 6.9931640625, // 1 + [50] = 6.9931640625, // 2 + [51] = 6.9931640625, // 3 + [52] = 6.9931640625, // 4 + [53] = 6.9931640625, // 5 + [54] = 6.9931640625, // 6 + [55] = 6.9931640625, // 7 + [56] = 6.9931640625, // 8 + [57] = 6.9931640625, // 9 + [58] = 4.9951171875, // : + [59] = 4.9951171875, // ; + [60] = 9.001953125, // < + [61] = 9.001953125, // = + [62] = 9.001953125, // > + [63] = 5.99951171875, // ? + [64] = 11.0, // @ + [65] = 7.51953125, // A + [66] = 7.541015625, // B + [67] = 7.680664062499999, // C + [68] = 8.4755859375, // D + [69] = 6.95556640625, // E + [70] = 6.32177734375, // F + [71] = 8.529296875, // G + [72] = 8.26611328125, // H + [73] = 4.6298828125, // I + [74] = 5.00048828125, // J + [75] = 7.62158203125, // K + [76] = 6.123046875, // L + [77] = 9.2705078125, // M + [78] = 8.228515625, // N + [79] = 8.658203125, // O + [80] = 6.63330078125, // P + [81] = 8.658203125, // Q + [82] = 7.6484375, // R + [83] = 7.51953125, // S + [84] = 6.7783203125, // T + [85] = 8.05126953125, // U + [86] = 7.51953125, // V + [87] = 10.87646484375, // W + [88] = 7.53564453125, // X + [89] = 6.767578125, // Y + [90] = 7.53564453125, // Z + [91] = 4.9951171875, // [ + [92] = 4.9951171875, // backslash + [93] = 4.9951171875, // ] + [94] = 9.001953125, // ^ + [95] = 6.9931640625, // _ + [96] = 6.9931640625, // ` + [97] = 6.6064453125, // a + [98] = 6.853515625, // b + [99] = 5.73095703125, // c + [100] = 6.853515625, // d + [101] = 6.552734375, // e + [102] = 3.8671874999999996, // f + [103] = 6.853515625, // g + [104] = 6.9609375, // h + [105] = 3.0185546875, // i + [106] = 3.78662109375, // j + [107] = 6.509765625, // k + [108] = 3.0185546875, // l + [109] = 10.69921875, // m + [110] = 6.9609375, // n + [111] = 6.67626953125, // o + [112] = 6.853515625, // p + [113] = 6.853515625, // q + [114] = 4.6943359375, // r + [115] = 5.73095703125, // s + [116] = 4.33447265625, // t + [117] = 6.9609375, // u + [118] = 6.509765625, // v + [119] = 9.001953125, // w + [120] = 6.509765625, // x + [121] = 6.509765625, // y + [122] = 5.779296875, // z + [123] = 6.982421875, // { + [124] = 4.9951171875, // | + [125] = 6.982421875, // } + [126] = 9.001953125, // ~ + [127] = 0.0, + [128] = 0.0, + [129] = 0.0, + [130] = 0.0, + [131] = 0.0, + [132] = 0.0, + [133] = 0.0, + [134] = 0.0, + [135] = 0.0, + [136] = 0.0, + [137] = 0.0, + [138] = 0.0, + [139] = 0.0, + [140] = 0.0, + [141] = 0.0, + [142] = 0.0, + [143] = 0.0, + [144] = 0.0, + [145] = 0.0, + [146] = 0.0, + [147] = 0.0, + [148] = 0.0, + [149] = 0.0, + [150] = 0.0, + [151] = 0.0, + [152] = 0.0, + [153] = 0.0, + [154] = 0.0, + [155] = 0.0, + [156] = 0.0, + [157] = 0.0, + [158] = 0.0, + [159] = 0.0, + [160] = 0.0, + [161] = 0.0, + [162] = 0.0, + [163] = 0.0, + [164] = 0.0, + [165] = 0.0, + [166] = 0.0, + [167] = 0.0, + [168] = 0.0, + [169] = 0.0, + [170] = 0.0, + [171] = 0.0, + [172] = 0.0, + [173] = 0.0, + [174] = 0.0, + [175] = 0.0, + [176] = 0.0, + [177] = 0.0, + [178] = 0.0, + [179] = 0.0, + [180] = 0.0, + [181] = 0.0, + [182] = 0.0, + [183] = 0.0, + [184] = 0.0, + [185] = 0.0, + [186] = 0.0, + [187] = 0.0, + [188] = 0.0, + [189] = 0.0, + [190] = 0.0, + [191] = 0.0, + [192] = 0.0, + [193] = 0.0, + [194] = 0.0, + [195] = 0.0, + [196] = 0.0, + [197] = 0.0, + [198] = 0.0, + [199] = 0.0, + [200] = 0.0, + [201] = 0.0, + [202] = 0.0, + [203] = 0.0, + [204] = 0.0, + [205] = 0.0, + [206] = 0.0, + [207] = 0.0, + [208] = 0.0, + [209] = 0.0, + [210] = 0.0, + [211] = 0.0, + [212] = 0.0, + [213] = 0.0, + [214] = 0.0, + [215] = 0.0, + [216] = 0.0, + [217] = 0.0, + [218] = 0.0, + [219] = 0.0, + [220] = 0.0, + [221] = 0.0, + [222] = 0.0, + [223] = 0.0, + [224] = 0.0, + [225] = 0.0, + [226] = 0.0, + [227] = 0.0, + [228] = 0.0, + [229] = 0.0, + [230] = 0.0, + [231] = 0.0, + [232] = 0.0, + [233] = 0.0, + [234] = 0.0, + [235] = 0.0, + [236] = 0.0, + [237] = 0.0, + [238] = 0.0, + [239] = 0.0, + [240] = 0.0, + [241] = 0.0, + [242] = 0.0, + [243] = 0.0, + [244] = 0.0, + [245] = 0.0, + [246] = 0.0, + [247] = 0.0, + [248] = 0.0, + [249] = 0.0, + [250] = 0.0, + [251] = 0.0, + [252] = 0.0, + [253] = 0.0, + [254] = 0.0, + [255] = 0.0 +}; + +// find the width of the string using the verdana 11points font +// re-write the string in place, skiping zero-length characters +static inline int verdana11_width(char *s) { + double w = 0.0; + char *d = s; + + while(*s) { + double t = verdana11_widths[(unsigned char)*s]; + if(t == 0.0) + s++; + else { + w += t + VERDANA_KERNING; + if(d != s) + *d++ = *s++; + else + d = ++s; + } + } + + *d = '\0'; + w -= VERDANA_KERNING; + w += VERDANA_PADDING; + return ceil(w); +} + +static inline size_t escape_xmlz(char *dst, const char *src, size_t len) { + size_t i = len; + + // required escapes from + // https://github.com/badges/shields/blob/master/badge.js + while(*src && i) { + switch(*src) { + case '\\': + *dst++ = '/'; + src++; + i--; + break; + + case '&': + if(i > 5) { + strcpy(dst, "&"); + i -= 5; + dst += 5; + src++; + } + else goto cleanup; + break; + + case '<': + if(i > 4) { + strcpy(dst, "<"); + i -= 4; + dst += 4; + src++; + } + else goto cleanup; + break; + + case '>': + if(i > 4) { + strcpy(dst, ">"); + i -= 4; + dst += 4; + src++; + } + else goto cleanup; + break; + + case '"': + if(i > 6) { + strcpy(dst, """); + i -= 6; + dst += 6; + src++; + } + else goto cleanup; + break; + + case '\'': + if(i > 6) { + strcpy(dst, "'"); + i -= 6; + dst += 6; + src++; + } + else goto cleanup; + break; + + default: + i--; + *dst++ = *src++; + break; + } + } + +cleanup: + *dst = '\0'; + return len - i; +} + +static inline const char *fix_units(const char *units) { + if(!units || !*units || !strcmp(units, "empty") || !strcmp(units, "null")) return ""; + if(!strcmp(units, "percentage") || !strcmp(units, "percent") || !strcmp(units, "pcent")) return "%"; + return units; +} + +static inline const char *color_map(const char *color) { + // colors from: + // https://github.com/badges/shields/blob/master/colorscheme.json + if(!strcmp(color, "brightgreen")) return "#4c1"; + else if(!strcmp(color, "green")) return "#97CA00"; + else if(!strcmp(color, "yellow")) return "#dfb317"; + else if(!strcmp(color, "yellowgreen")) return "#a4a61d"; + else if(!strcmp(color, "orange")) return "#fe7d37"; + else if(!strcmp(color, "red")) return "#e05d44"; + else if(!strcmp(color, "blue")) return "#007ec6"; + else if(!strcmp(color, "grey")) return "#555"; + else if(!strcmp(color, "gray")) return "#555"; + else if(!strcmp(color, "lightgrey")) return "#9f9f9f"; + else if(!strcmp(color, "lightgray")) return "#9f9f9f"; + return color; +} + +static inline void calc_colorz(const char *color, char *final, size_t len, calculated_number value, int value_is_null) { + char color_buffer[256 + 1] = ""; + char value_buffer[256 + 1] = ""; + char comparison = '>'; + + // example input: + // colormin|color:null... + + const char *c = color; + while(*c) { + char *dc = color_buffer, *dv = NULL; + size_t ci = 0, vi = 0; + + const char *t = c; + + while(*t && *t != '|') { + switch(*t) { + case ':': + comparison = '='; + dv = value_buffer; + break; + + case '}': + case ')': + case '>': + if(t[1] == '=') { + comparison = ')'; + t++; + } + else + comparison = '>'; + dv = value_buffer; + break; + + case '{': + case '(': + case '<': + if(t[1] == '=') { + comparison = '('; + t++; + } + else + comparison = '<'; + dv = value_buffer; + break; + + default: + if(dv) { + if(vi < 256) { + vi++; + *dv++ = *t; + } + } + else { + if(ci < 256) { + ci++; + *dc++ = *t; + } + } + break; + } + + t++; + } + + // prepare for next iteration + if(*t == '|') t++; + c = t; + + // do the math + *dc = '\0'; + if(dv) { + *dv = '\0'; + + if(value_is_null) { + if(!*value_buffer || !strcmp(value_buffer, "null")) + break; + } + else { + calculated_number v = strtold(value_buffer, NULL); + + if(comparison == '<' && value < v) break; + else if(comparison == '(' && value <= v) break; + else if(comparison == '>' && value > v) break; + else if(comparison == ')' && value >= v) break; + else if(comparison == '=' && value == v) break; + } + } + else + break; + } + + const char *b; + if(color_buffer[0]) + b = color_buffer; + else + b = color; + + strncpyz(final, b, len); +} + +// value + units +#define VALUE_STRING_SIZE 100 + +// label +#define LABEL_STRING_SIZE 200 + +// colors +#define COLOR_STRING_SIZE 100 + +void buffer_svg(BUFFER *wb, const char *label, calculated_number value, const char *units, const char *label_color, const char *value_color, int value_is_null, int precision) { + char label_buffer[LABEL_STRING_SIZE + 1] + , value_color_buffer[COLOR_STRING_SIZE + 1] + , value_string[VALUE_STRING_SIZE + 1] + , label_escaped[LABEL_STRING_SIZE + 1] + , value_escaped[VALUE_STRING_SIZE + 1] + , label_color_escaped[COLOR_STRING_SIZE + 1] + , value_color_escaped[COLOR_STRING_SIZE + 1]; + + int label_width, value_width, total_width; + + if(unlikely(!label_color || !*label_color)) + label_color = "#555"; + + if(unlikely(!value_color || !*value_color)) + value_color = (value_is_null)?"#999":"#4c1"; + + units = fix_units(units); + calc_colorz(value_color, value_color_buffer, COLOR_STRING_SIZE, value, value_is_null); + + char *separator = ""; + if(unlikely(isalnum(*units))) + separator = " "; + + if(unlikely(value_is_null)) + strcpy(value_string, "-"); + + else if(precision < 0) { + int len, l, lstop = 0; + + calculated_number abs = value; + if(isless(value, 0)) { + lstop = 1; + abs = -value; + } + + if(isgreaterequal(abs, 1000)) len = snprintfz(value_string, VALUE_STRING_SIZE, "%0.0Lf", (long double)value); + else if(isgreaterequal(abs, 100)) len = snprintfz(value_string, VALUE_STRING_SIZE, "%0.1Lf", (long double)value); + else if(isgreaterequal(abs, 1)) len = snprintfz(value_string, VALUE_STRING_SIZE, "%0.2Lf", (long double)value); + else if(isgreaterequal(abs, 0.1)) len = snprintfz(value_string, VALUE_STRING_SIZE, "%0.3Lf", (long double)value); + else len = snprintfz(value_string, VALUE_STRING_SIZE, "%0.4Lf", (long double)value); + + // remove trailing zeros + for(l = len - 1; l > lstop ; l--) { + if(likely(value_string[l] == '0')) { + value_string[l] = '\0'; + len--; + } + + else if(unlikely(value_string[l] == '.')) { + value_string[l] = '\0'; + len--; + break; + } + + else + break; + } + + if(len >= 0) + snprintfz(&value_string[len], VALUE_STRING_SIZE - len, "%s%s", separator, units); + } + else { + if(precision > 50) precision = 50; + snprintfz(value_string, VALUE_STRING_SIZE, "%0.*Lf%s%s", precision, (long double)value, separator, units); + } + + // we need to copy the label, since verdana11_width may write to it + strncpyz(label_buffer, label, LABEL_STRING_SIZE); + + label_width = verdana11_width(label_buffer) + (BADGE_HORIZONTAL_PADDING * 2); + value_width = verdana11_width(value_string) + (BADGE_HORIZONTAL_PADDING * 2); + total_width = label_width + value_width; + + escape_xmlz(label_escaped, label_buffer, LABEL_STRING_SIZE); + escape_xmlz(value_escaped, value_string, VALUE_STRING_SIZE); + escape_xmlz(label_color_escaped, color_map(label_color), COLOR_STRING_SIZE); + escape_xmlz(value_color_escaped, color_map(value_color_buffer), COLOR_STRING_SIZE); + + wb->contenttype = CT_IMAGE_SVG_XML; + + // svg template from: + // https://raw.githubusercontent.com/badges/shields/master/templates/flat-template.svg + buffer_sprintf(wb, + "" + "" + "" + "" + "" + "" + "" + "" + "" + "" + "" + "" + "" + "" + "%s" + "%s" + "%s" + "%s" + "" + "", + total_width, total_width, + label_width, label_color_escaped, + label_width, value_width, value_color_escaped, + total_width, + label_width / 2, label_escaped, + label_width / 2, label_escaped, + label_width + value_width / 2 -1, value_escaped, + label_width + value_width / 2 -1, value_escaped); +} -- cgit v1.2.3