1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
is.mac <- function() grepl("darwin", R.version$platform)
is.win <- function() .Platform$OS.type == "windows"
is.linux <- function() (.Platform$OS.type == "unix") && (is.mac() == FALSE)
is.unix <- function() .Platform$OS.type == "unix"
is.solaris <- function() grepl("solaris", R.version$os)
file.path2 <- function(...){
sep <- if(is.unix()) "/" else "\\"
paste0(list(...), collapse = sep)
}
write_to_temp <- function(contents) {
tempname <- tempfile()
writeLines(contents, tempname)
tempname
}
name_and_increment <- function(prefix, option) {
# grab # of current rings, set ring number, and increment
num <- getOption(option)
num <- ifelse(is.null(num), 1L, strtoi(num))
setOption(option, num + 1)
# make name
sprintf("m2rint%s%08d", prefix, num)
}
listify <- function (strings) paste0("{", paste(strings, collapse = ","), "}")
listify_mat <- function (mat) listify(apply(mat, 1, listify))
# (mat <- matrix(1:9, nrow = 3))
# listify_mat(mat)
delistify <- function (string, f, collapse, ...) {
# dewhiten
s <- str_replace_all(string, "[\\s]+", "")
# kill outside {}
s <- str_sub(s, 3, -3)
# break it up
s <- str_split(s, fixed("},{"))[[1]]
s <- str_split(s, fixed(","))
# f, if available
if ( !missing(f) ) s <- lapply(s, f, ...)
# collapse, if available
if ( !missing(collapse) ) s <- do.call(collapse, s)
# return
s
}
# string <- "{{1,2,3}, {1,34,45}, {2213,1123,6543}, {0,0,0}}"
# delistify(string)
# str(delistify(string))
# delistify(string, as.integer)
# delistify(string, as.integer, rbind)
mpolyList_to_m2_str <- function(mpolyList) {
# allow for character vectors
if (inherits(mpolyList, "mpoly")) mpolyList <- mpolyList(mpolyList)
# parse it if it's a numeric or character string
if(is.numeric(mpolyList)) mpolyList <- as.character(mpolyList)
if(is.character(mpolyList)) mpolyList <- mp(mpolyList)
# convert mpolylist to strings readable by m2
vec <- vapply(mpolyList, print, character(1),
silent = TRUE, stars = TRUE
)
vec <- str_replace_all(vec, "[\\s]+", "")
vec <- str_replace_all(vec, "\\*\\*", "^")
# return
vec
}
# mpolyList_to_m2_str( mp(c("x^3","x + y z", "1")) )
# mpolyList_to_m2_str( c(1, 2, 3) )
`%notin%` <- function(x, y) { !(x %in% y) }
# 2 %notin% 1:5
# 2 %notin% (1:5)[-2]
`%:%` <- function(x, y) {
# do type checking
stopifnot(
is.character(x), length(x) == 1,
is.character(y), length(y) == 1
)
# check letters
if(all(c(x,y) %in% letters)) { # lower case letters given
x_ndx <- which(x == letters)
y_ndx <- which(y == letters)
letters[x_ndx:y_ndx]
} else if (all(c(x,y) %in% LETTERS)) { # upper case letters given
x_ndx <- which(x == LETTERS)
y_ndx <- which(y == LETTERS)
LETTERS[x_ndx:y_ndx]
} else {
stop("letters must be of the same case")
}
}
# copy pryr::dots so that we don't have to import pryr
dots <- function(...) {
eval(substitute(alist(...)))
}
|
